What's Changed

Features

• Eisenstein integers (#543).
• Poseidon2 (#553).
• BabyBear and KoalaBear fields: 31-bit vanilla Go implementation (#558, #577).
• FFLonK (#498).
• KZG MPC setup (#589).
• Hash registry with state storer (#564).
• Miller loop with direct sextic extension (BW6-761) (#608).

Performance Improvements

• Add assembly implementations: Vector::Add, Sub, and ScalarMul (purego included) (#536).
• AVX512 optimizations: vector.Sum, vector.InnerProduct + assembly refactor (#547).
• AVX512 vector operations: KoalaBear and BabyBear fields (#568).
• ARM64 assembly optimizations: 4 and 6 words modulus (#554).
• ARM NEON assembly: KoalaBear and BabyBear fields (#588).
• Subgroup check optimizations (#557).
• SetBytes performance: Avoids allocations in non-fast paths (#599).

Fixes

• Polynomial evaluation (#539).
• Shplonk Buffer sizing (#551).
• Typos (#562, #610).
• Comment and variable naming fixes (#603).

Refactors

• Removed curves: BLS12-378 and BW6-756 (#534).
• SIS cleanup (#596).
• Removed ECC Encoder dependency: FFT domain marshal (#565).
• Cleaned IOP (#587).

Documentation

• Updated README (#533).
• Documented batchAddAffine function (#555).
• Updated element package documentation (#572).
• Less verbose Apache 2 header (#570).
• Fixed non-generated headers (#571).
• Changed copyright year to 2025 (#595).

Full Changelog: https://github.com/Consensys/gnark-crypto/compare/v0.14.0...v0.15.0