v6.7.0-rc1 is the first release candidate of the v6.7 line, cut from release/v6.7.

See the v6.7 section of the CHANGELOG for the full list of changes and the upgrade guide, which covers the IBC core, transfer and query removal, the capability and feegrant module removal, the WebSocket frame-size default change, the ABCI/gRPC pagination caps, and the legacy sei_* JSON-RPC removal.

What's Changed

• Co-broadcast rich block CW20 transfer with EVM batch by @masih in https://github.com/sei-protocol/sei-chain/pull/3626
• MaxSize computation for sized proto messages by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3619
• revisited autobahn msg buffers by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3629
• feat(protoutils): UnmarshalWithLimit — pre-decode allocation estimate by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3615
• Storage read visiblity by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3566
• Add Autobahn fullnode (CON-309) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3525
• downgrading logging levels in p2p by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3633
• fix(evmrpc): Cap calls in eth_estimateGasAfterCalls by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3631
• Generate v6.6 CHANGELOG by @masih in https://github.com/sei-protocol/sei-chain/pull/3634
• block store implementation (littDB) by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3600
• dynamic router switching by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3581
• fix(evmrpc): cap eth_getBlockReceipts fan-out and concurrent logs subscriptions (PLT-701) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3621
• HashLogger by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3628
• ReceiptStore Add littidx backend (LittDB bodies + pebble tag index) by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3620
• feat(evmrpc): configurable batch request limit and batch response size by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3636
• fix(grpc-web): set ReadTimeout, WriteTimeout, IdleTimeout, and MaxOpenConnections by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3605
• ci(PLT-761): cancel superseded integration-test PR runs and defer Autobahn Gov/Mint/Upgrade to merge queue by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3639
• fix(evmrpc): acquire requestLimiter in eth_createAccessList by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3646
• ci(PLT-766): cancel superseded PR runs for remaining workflows by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3649
• fixed the header number limit for FullCommitQC (PLT-764) by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3643
• Autobahn hashvault integration by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3602
• Enable UCI AI review and assist by @masih in https://github.com/sei-protocol/sei-chain/pull/3651
• Parallelize littidx eth_getLogs across blocks by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3652
• Add GoReleaser release pipeline for static seid binaries by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3425
• Upodate checkout GHA step across all workflows by @masih in https://github.com/sei-protocol/sei-chain/pull/3659
• [codex] bump go-ethereum to v1.15.7-sei-17 by @codchen in https://github.com/sei-protocol/sei-chain/pull/3657
• fix(evmrpc): bound debug_traceStateAccess memory and add trace admission control (PLT-360) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3653
• Per-block littidx flush + single shard (gated on #3645) by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3660
• fix(sei-tendermint): prevent readRoutine goroutine leak on /websocket when writeChan is full (PLT-707) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3664
• Make autobahn block production check wait for progress by @masih in https://github.com/sei-protocol/sei-chain/pull/3667
• feat(evmrpc): pre-decode request size admission control (PLT-295) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3648
• fix(evmrpc): apply getLogs maxLog cap during merge instead of after (PLT-687) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3666
• Require absolute path for evmone lib by @masih in https://github.com/sei-protocol/sei-chain/pull/3668
• chore: replace OLD red SeiLogo banner in README with new 2026 Sei lockup by @alexander-sei in https://github.com/sei-protocol/sei-chain/pull/3670
• feat(consensus): mock_chain_validation replay build + memIAVL state-sync restore fixes by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3663
• [codex] Harden multiversion iterator validation by @codchen in https://github.com/sei-protocol/sei-chain/pull/3656
• fix(metrics): Prometheus metrics output by @m3diumrare in https://github.com/sei-protocol/sei-chain/pull/3640
• integrate hashlogger by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3647
• LittDB: Keymap threading improvements by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3645
• fix(evmrpc): limit listener max open connections, configurable via max_open_connections (PLT-704) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3637
• feat(seid): ConfigManager selection seam (PLT-775 PR1) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3671
• feat(grpc): add keepalive, LimitListener, and MaxRecvMsgSize to gRPC server :9090 (PLT-705) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3641
• feat(seidb): dump-flatkv computes per-bucket/total LtHash by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3665
• State Store: Compact pruned key range after each prune by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3675
• Retry npm install for disable wasm integration test by @masih in https://github.com/sei-protocol/sei-chain/pull/3674
• Pin priority-fee assertions to stable heads by @masih in https://github.com/sei-protocol/sei-chain/pull/3680
• Update changelog in prep to cut 6.6 RC1 by @masih in https://github.com/sei-protocol/sei-chain/pull/3685
• Close temporary rootmulti store in channel types setup by @masih in https://github.com/sei-protocol/sei-chain/pull/3690
• Add chain_id label to OTel metrics by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3692
• Add gov proposal based migration trigger by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3650
• Fix rpc hash race condition by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3693
• feat(replay): historical_replay build tag for lenient tx decoder by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3691
• feat(evmrpc): bound debug_trace struct-logger memory via max_trace_struct_log_bytes (PLT-205) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3677
• feat(inprocess): in-process N-validator harness by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3642
• Avoid localnode generated-dir cleanup race by @masih in https://github.com/sei-protocol/sei-chain/pull/3700
• feat(indexer): push result cap and ordering into KV block search (PLT-748) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3689
• hashlog cli by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3676
• fix(composite): reset sticky commit-info latches on rollback across migration boundaries by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3705
• Accept legacy cosmos_only SC write mode by @masih in https://github.com/sei-protocol/sei-chain/pull/3704
• Stabilize websocket writeChan leak regression tests by @masih in https://github.com/sei-protocol/sei-chain/pull/3715
• Cleanup blocksim benchmarks by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3683
• fix(mock_balances): mempool readiness gate must see the mock top-off (empty-blocks regression) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3720
• ci: retry docker registry push/pull in integration tests via shared helper by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3723
• Revert "Fix seid rollback after deprecating cosmos pruning strategy" by @masih in https://github.com/sei-protocol/sei-chain/pull/3725
• refactor of sei-tendermint metrics by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3696
• Make memiavl iterator snapshot rewrite deterministic by @masih in https://github.com/sei-protocol/sei-chain/pull/3726
• fix(docker): giga-mixed cluster silently ran all-giga; write explicit executor config + role guard by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3727
• fix(sei-tendermint): make empty validator-set proto round-trip lossless so state-sync can boot on gentx chains by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3724
• fix(logging): demote per-mint bank log to Debug (mock_balances top-off spam) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3729
• fix(evmrpc): mask state overrides with a simulation-local storage overlay by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3722
• Polish EVM migration logs by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3728
• Update v6.6 changelog in prep to cut rc2 by @masih in https://github.com/sei-protocol/sei-chain/pull/3730
• prometheus metrics for autobahn/avail, autobahn/data and p2p/mux by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3682
• Make telemetry metrics emission deterministic by @masih in https://github.com/sei-protocol/sei-chain/pull/3733
• add block number to ReadBlockByHash by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3703
• feat(autobahn): Add epoch.Registry to maintain committee/stake (CON-358) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3632
• Add offline rollback utility for LittDB by @Kbhat1 in https://github.com/sei-protocol/sei-chain/pull/3684
• fix(consensus): guard /consensus_state RPC against empty-validator-set divide-by-zero by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3740
• feat(cosmos): range-check Dec conversions and DecCoin validation (CON-369) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3741
• Update v6.6 changelog in prep to cut rc3 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3744
• BlockDB: no orphaned blocks by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3734
• Align FlatKV snapshot config with MemIAVL by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3745
• fix(feegrant): bound DenomsSubsetOf cost and cap allowance denoms by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3710
• feat(scripts): add SC read-path RPC probe (consistency check + load) by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3751
• feat(seidb): composite + replay digest modes and migration-boundary omission for evm-logical-digest by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3711
• fix(giga): route EVM validation failures to v2 fallback (CON-368) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3753
• Fix address distro bug by @codchen in https://github.com/sei-protocol/sei-chain/pull/3716
• fix(evm): bound store-cache depth amplification from stacked EVM snapshots by @codchen in https://github.com/sei-protocol/sei-chain/pull/3713
• fix stale blockDB godocs by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3763
• Fix static seid SIGSEGV (pin pre-gcc-12 libgcc unwinder), add boot smoke gate, build binaries on manual tag pushes by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3749
• ci: prevent runner disk exhaustion in integration + lint jobs (PLT-807) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3762
• fix(seidb-bench): tolerate nil FlatKV config in bench wrapper factory by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3770
• feature(sei-db) LTHash refactory for adding per module hash and stats by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3758
• feat(ratelimiter): add MethodParser for pre-decode JSON-RPC method extraction (PLT-800) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3755
• State WAL replacement by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3701
• special error when reading below watermark by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3773
• Add REVIEW.md guidelines for AI PR reviewers by @codchen in https://github.com/sei-protocol/sei-chain/pull/3774
• deprecate vesting module while preserving all store/state by @codchen in https://github.com/sei-protocol/sei-chain/pull/3714
• Use DBImpl for giga mock balance validation by @codchen in https://github.com/sei-protocol/sei-chain/pull/3750
• Disable JS debug tracers by default with native tracer allowlist by @masih in https://github.com/sei-protocol/sei-chain/pull/3718
• fix(giga): fall back to v2 on execution errors by @philipsu522 in https://github.com/sei-protocol/sei-chain/pull/3768
• feat(seidb-bench): add write-set replay adapter for opcode storage-cost measurement by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3772
• Update v6.6 changelog in prep to cut rc4 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3765
• Tests: Precompile Tests Phase 1 (PLT-372) by @alexander-sei in https://github.com/sei-protocol/sei-chain/pull/3777
• (autobahn-only) Reject empty tipcuts in Proposal.Verify by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3784
• LittDB compression by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3769
• WAL Benchmark by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3775
• fix(evm/state): key overlay by address, journal SetStorage install, fix giga-path SetStorage by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3785
• storage manager by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3787
• feat(precompiles): expose module Query rpcs as precompile methods by @codchen in https://github.com/sei-protocol/sei-chain/pull/3767
• ci(PLT-825): run all Autobahn integration tests on every PR by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3790
• fixed support for AllowEmptyBlocks = false for autobahn by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3739
• Add CommitBlock API for FlatKV by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3788
• Tests: Precompile Tests Phase 2 (PLT-372) by @alexander-sei in https://github.com/sei-protocol/sei-chain/pull/3786
• Close merkle suite store during teardown by @masih in https://github.com/sei-protocol/sei-chain/pull/3794
• feat(indexer): push result cap and ordering into KV tx search (PLT-748) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3708
• Add new Storage interface for Giga executor by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3789
• feat(data): integrate LittDB-backed BlockDB into autobahn data layer (CON-272) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3707
• test(solo): add SIGN_MODE_LEGACY_AMINO_JSON test coverage (PLT-827) by @alexander-sei in https://github.com/sei-protocol/sei-chain/pull/3795
• Make boot-smoke gate deterministic (first boot RAYON_NUM_THREADS=1) by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3803
• Tolerate failed Codex review executions by @masih in https://github.com/sei-protocol/sei-chain/pull/3807
• Upgrade to lates UCI AI review for skip label support by @masih in https://github.com/sei-protocol/sei-chain/pull/3805
• fix(evmrpc): floor earliest state height at genesis InitialHeight (SEI-10383) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3798
• perf(params): validate ConsensusParams once per change set (CON-312) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3809
• Harden GHCR image tag cleanup workflow by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3801
• fix(distribution): align withdraw-address checks with bank send restrictions by @codchen in https://github.com/sei-protocol/sei-chain/pull/3792
• perf(evm): cache BLOCKHASH via 32-byte hash ring (CON-372) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3811
• feat(evmrpc): bound eth_getLogs peak memory with matched-log count and byte budgets by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3759
• precompile: price dynamic-gas calldata decoding by supplied gas by @codchen in https://github.com/sei-protocol/sei-chain/pull/3737
• Bump sei-protocol/go-ethereum to v1.15.7-sei-18 by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3804
• Align multisig SignatureData with bitarray invariants (CON-371) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3810
• fix(giga): fix flaky TestAvailClientServer test by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3812
• Add codecs for ReceiptDB with txIndex by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3799
• fix(ss/composite): gate EVM kind parsing on the evm module in convertFlatKVNodes by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3817
• (CI) Remove redundant Docker Hub login from integration-tests matrix job by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3814
• feat(seed): serve Prometheus metrics in seed mode by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3819
• Fix PebbleDB iterator stack overflow by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3823
• fix(seidb): give FlatKV and memIAVL latency histograms explicit buckets by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3824
• Allow iteration to start at a specific key in littDB/blockDB by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3806
• Snapshot Engine by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3808
• precompile: convert json/pointerview/p256 to dynamic-gas precompiles by @codchen in https://github.com/sei-protocol/sei-chain/pull/3813
• fix(ante): address association parity across EVM ante paths by @codchen in https://github.com/sei-protocol/sei-chain/pull/3793
• Harden account key validation by @codchen in https://github.com/sei-protocol/sei-chain/pull/3791
• fix(receipt): correct log heap struct overhead in eth_getLogs budget (PLT-862) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3826
• test(config): characterize the legacy configuration surface with native fuzzing (PLT-775) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3816
• fix(distribution): make delegation-reward queries read-only by @codchen in https://github.com/sei-protocol/sei-chain/pull/3738
• (Autobahn) load Block DB at the app tip on restart (CON-272) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3827
• Enable seidroid xreview on sei-chain by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3830
• fix(evidence): remove unused GetAllEvidence call in AllEvidence query by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3833
• Bump goja version (CON-366) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3832
• fix(autobahn): prevent block-sync livelock after restart catch-up by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3831
• feat(configmanager): SeiConfigManager v2 body — validate-passthrough (PLT-775 PR2) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3678
• feat(precompiles): expose module Msg rpcs as precompile methods by @codchen in https://github.com/sei-protocol/sei-chain/pull/3825
• [codex] add evm-only giga executor path by @codchen in https://github.com/sei-protocol/sei-chain/pull/3583
• Bump sei go-ethereum to v1.15.7-sei-19 by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3841
• fix(seidb-bench): stop the state-store bench backends fail on a nil config by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3838
• test(config): pin the section-level env shadow, and make the parity comparison deterministic (PLT-775) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3837
• Add giga config and unify garbage collector logic by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3829
• evmrpc: extend admission control to the WebSocket plane by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3818
• Remove redundant libstdc++6 installation by @masih in https://github.com/sei-protocol/sei-chain/pull/3847
• test(config): make a renamed configuration key fail the suite (PLT-893) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3851
• goreleaser: drop duplicate changelog + Full Changelog link from release notes by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3856
• Migrate sei-wasmd keeper contract and IBC relay metrics to OTel (PLT-910) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3852
• Migrate evmrpc, gaskv, and bank new-account metrics to OTel (PLT-911) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3858
• PLT-819: Wire fail-closed rate limiter + MethodParser into EVM JSON-RPC HTTP (:8545) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3779
• test(config): check which indexer and whether tracing is off, and stop one test changing another's config (PLT-893) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3855
• Replace legacy WAL by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3844
• Fix edge case for per module lattice hash updates by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3853
• Extend tx decoder canonical-size check to AuthInfo (CON-343) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3839
• StateWAL + FlatKV by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3835
• feat(precompiles): add scoped vote authorization flow by @codchen in https://github.com/sei-protocol/sei-chain/pull/3846
• perf(evm): memoize deliver GetCode (+ giga); fix pointer upsert Multistore write target (CON-361) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3843
• [codex] add evm-only executor load test harness by @codchen in https://github.com/sei-protocol/sei-chain/pull/3658
• Restore LCD pagination while preserving v6.6 precompile semantics by @masih in https://github.com/sei-protocol/sei-chain/pull/3867
• Close temporary rootmulti store in connection types setup by @masih in https://github.com/sei-protocol/sei-chain/pull/3872
• Update v6.6 changelog in prep to cut patch release by @masih in https://github.com/sei-protocol/sei-chain/pull/3876
• test(config): extend golden value test coverage (PLT-893) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3861
• Remove unused interchain accounts implementation by @masih in https://github.com/sei-protocol/sei-chain/pull/3875
• fix(evmrpc): stream request-body budget charging to close slowloris gap (PLT-780) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3836
• Update go-releaser heading with experimental notice by @masih in https://github.com/sei-protocol/sei-chain/pull/3879
• scripts: load generator for arctic-1 and atlantic-2 by @kollegian in https://github.com/sei-protocol/sei-chain/pull/3850
• fix(evm): count post-admission apply failures in dynamic base-fee gas (CON-359) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3871
• fix(flatkv): preserve empty misc values and reject malformed empty node imports by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3869
• Remove interchain swagger API and protos by @masih in https://github.com/sei-protocol/sei-chain/pull/3881
• test(config): complete the GetConfig read-site coverage (PLT-893) by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3870
• Remove all IBC code in test scope by @masih in https://github.com/sei-protocol/sei-chain/pull/3882
• test(receipt): pin logHeapStructOverhead against types.Log layout (PLT-958) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3886
• Implement new Giga GarbageCollector interface by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3868
• Revert "Enable seidroid xreview on sei-chain (#3830)" by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3901
• fix(flatkv): report snapshots a rollback could not remove by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3887
• Refactor separating AppQC from CommitQC by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3849
• Migrate precompiles/bank and giga/deps metrics to OTel (PLT-912) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3859
• fix(evmrpc): fail closed on pruned receipt heights for getBlock* endpoints (PLT-979) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3909
• block production fix + loadtest-related utilities by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3905
• Recognize live AppHash rejection as loud failure by @masih in https://github.com/sei-protocol/sei-chain/pull/3906
• Remove sei2_* API support and implementation by @masih in https://github.com/sei-protocol/sei-chain/pull/3912
• Upgreade UCI AI review and assist pipeline to latest by @masih in https://github.com/sei-protocol/sei-chain/pull/3915
• fix(evmrpc): honor trace_timeout in profiled debug_traceBlock path (PLT-989) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3914
• fix(p2p): bound the inbound node-info exchange by the handshake deadline by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3916
• Bump sei go-ethereum to v1.15.7-sei-20 by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3920
• removed defaults for RouterOptions.Dial/AcceptRate by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3922
• Fix UCI AI review trigger for explicit review ask by @masih in https://github.com/sei-protocol/sei-chain/pull/3921
• Use unique hashes in concurrent nonce test by @masih in https://github.com/sei-protocol/sei-chain/pull/3923
• Remove unused legacy sei_* block APIs by @masih in https://github.com/sei-protocol/sei-chain/pull/3924
• feat(autobahn): implement new lane ID for epoch (CON-358) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3862
• fix(p2p): make the inbound accept rate configurable and raise its default by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3899
• feat(precompiles): add scoped module authorizations by @codchen in https://github.com/sei-protocol/sei-chain/pull/3893
• Refine review context on cosmos gasless tx by @masih in https://github.com/sei-protocol/sei-chain/pull/3933
• removed consensus timeout overrides from config by @pompon0 in https://github.com/sei-protocol/sei-chain/pull/3934
• Remove support for eth_getProof by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3926
• feat(seidb): add exact-version state store snapshots by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3919
• Add freeze mode for historical EVM RPC by @codchen in https://github.com/sei-protocol/sei-chain/pull/3910
• Remove legacy commit hash validation fallback by @masih in https://github.com/sei-protocol/sei-chain/pull/3937
• Remove remaining unused legacy sei_* APIs by @masih in https://github.com/sei-protocol/sei-chain/pull/3927
• Refine review config to consider on chain params by @masih in https://github.com/sei-protocol/sei-chain/pull/3936
• metrics: refine block gas histogram buckets (PLT-1002) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3949
• Remove metadata DB by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3928
• Remove support for sei_getTransactionReceipt API by @masih in https://github.com/sei-protocol/sei-chain/pull/3945
• [ConfigManager] Remove redundant test coverage by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3942
• fix(evmrpc): unexport RPC-adjacent helper methods to prevent unintended JSON-RPC registration by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3950
• [ConfigManager] Config Registry by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3943
• feat(seeds): ship Sei Labs seeds as the default bootstrap-peers by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3885
• Deprecate IBC write handlers by @masih in https://github.com/sei-protocol/sei-chain/pull/3947
• Add context cancellation to SS DB layer by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3940
• test(sei-db): wait for the flush before releasing the snapshot by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3959
• Update v6.6 change log in prep to cut v6.6.2 patch by @masih in https://github.com/sei-protocol/sei-chain/pull/3964
• utility for running unit tests against RAM disk by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3963
• Handle new modules and common files in version bump by @masih in https://github.com/sei-protocol/sei-chain/pull/3962
• Generate v6.7 precompiles by @masih in https://github.com/sei-protocol/sei-chain/pull/3961
• Upgrade to AI review to the latest UCI v0.0.18 by @masih in https://github.com/sei-protocol/sei-chain/pull/3968
• fix(bank): reduce complexity in multisend validation by @shemnon in https://github.com/sei-protocol/sei-chain/pull/3955
• [ConfigManager] Sei Config File by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3952
• script for running tests in RAM by @cody-littley in https://github.com/sei-protocol/sei-chain/pull/3971
• fix(types): return false for coin denomination mismatches by @shemnon in https://github.com/sei-protocol/sei-chain/pull/3970
• [ConfigManager] Install resolved configuration into the boot source by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3973
• fix(gov): harden deposit refund handling by @codchen in https://github.com/sei-protocol/sei-chain/pull/3956
• Deprecate oracle message and query handlers by @codchen in https://github.com/sei-protocol/sei-chain/pull/3944
• Remove feegrant module by @masih in https://github.com/sei-protocol/sei-chain/pull/3958
• feat(sei-db): roll back state store from snapshot and WAL by @blindchaser in https://github.com/sei-protocol/sei-chain/pull/3967
• Upgrade to latest UCI AI review by @masih in https://github.com/sei-protocol/sei-chain/pull/3982
• Separate BlockStore and BlockDB interface by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3969
• Split the musl cgo link path by architecture by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3932
• Remove capability module by @masih in https://github.com/sei-protocol/sei-chain/pull/3980
• Remove unreachable IBC channel handshake logic by @masih in https://github.com/sei-protocol/sei-chain/pull/3988
• Test gas gating in weighted vote by @masih in https://github.com/sei-protocol/sei-chain/pull/3987
• Add per-IP rate limiting to CometBFT RPC HTTP by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3911
• feat(query): origin-aware pagination limits for ABCI queries by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3984
• fix(metrics): wire pending nonce events in mempool OTel counter (PLT-1017) by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3991
• fix(sei-tendermint): address mac/linux test node divergence by @shemnon in https://github.com/sei-protocol/sei-chain/pull/3996
• Require matching ModeInfo and nested signature counts (CON-393) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3863
• Complete multi-epoch ownership across Autobahn layers (CON-358) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3929
• Remove live IBC transfer module by @masih in https://github.com/sei-protocol/sei-chain/pull/3981
• Stop AI workflows from running on submitted reviews by @masih in https://github.com/sei-protocol/sei-chain/pull/4001
• Disable mempool traffic in freeze mode by @masih in https://github.com/sei-protocol/sei-chain/pull/3990
• Remove retired IBC query APIs by @masih in https://github.com/sei-protocol/sei-chain/pull/4002
• Use iterative traversal for memiavl snapshot writes by @masih in https://github.com/sei-protocol/sei-chain/pull/4003
• fix(evmrpc): don't charge an innocent client's per-IP bucket on mid-read budget exhaustion by @amir-deris in https://github.com/sei-protocol/sei-chain/pull/3935
• Retire remaining CosmWasm IBC execution by @masih in https://github.com/sei-protocol/sei-chain/pull/4008
• feat(cosmos): return errors from NewDecCoinsFromCoins (CON-370) by @wen-coding in https://github.com/sei-protocol/sei-chain/pull/3997
• [ConfigManager] Register Sections 1/4 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3974
• Simplify retired IBC transaction rejection by @masih in https://github.com/sei-protocol/sei-chain/pull/4010
• [ConfigManager] Register Sections 2/4 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3975
• [ConfigManager] Register Sections 3/4 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3976
• [ConfigManager] Register Sections 4/4 by @bdchatham in https://github.com/sei-protocol/sei-chain/pull/3977
• Fix intermittent failures in buf breaking change check by @masih in https://github.com/sei-protocol/sei-chain/pull/4013
• Detach applications from retired IBC core by @masih in https://github.com/sei-protocol/sei-chain/pull/4014
• Remove unreferenced IBC core by @masih in https://github.com/sei-protocol/sei-chain/pull/4015
• Remove stale ibc from v6.7 module version map by @masih in https://github.com/sei-protocol/sei-chain/pull/4016
• Add frozen RPC router and Docker integration cluster by @codchen in https://github.com/sei-protocol/sei-chain/pull/3989
• Preserve legacy IBC governance decoding by @masih in https://github.com/sei-protocol/sei-chain/pull/4017
• Backport release/v6.7: Bound block reference parsing depth by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4035
• Backport release/v6.7: Attach a static linux/arm64 seid binary to releases by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4047
• Backport release/v6.7: Bound frozen RPC router batch allocations by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4049
• Backport release/v6.7: Fix memiavl snapshot race condition by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4051
• Backport release/v6.7: Validate snapshots before publication by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4054
• Backport release/v6.7: Upgrade UCI AI review to latest and allow review of PRs from seidroid by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4063
• Backport release/v6.7: fix(precompiles): disable Wasmd execute_batch by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4074
• Backport release/v6.7: fix FlatKV cache memory leak by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4095
• Backport release/v6.7: Update changelog in prep to cut v6.7 by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/4113
• Bump version to v6.7.0-rc1 in prep for release by @alexander-sei in https://github.com/sei-protocol/sei-chain/pull/4116

New Contributors

• @m3diumrare made their first contribution in https://github.com/sei-protocol/sei-chain/pull/3640

Full Changelog: https://github.com/sei-protocol/sei-chain/compare/v6.6.0...v6.7.0-rc1