Added

• RaBitQ implementation (#4235)
• Add RaBitQ to the swigfaiss so we can access its properties correctly in python (#4304)
• Add date and time to the codec file path so that the file doesn't get overridden with each run (#4303)
• Add missing header in faiss/CMakeLists.txt (#4285)
• Implement is_spherical and normalize_L2 booleans as part of the training APIs (#4279)
• Add normalize_l2 boolean to distributed training API
• re-land mmap diff (#4250)
• SearchParameters support for IndexBinaryFlat (#4055)
• Support non-partition col and map in the embedding reader (#4229)
• Support cosine distance for training vectors (#4227)
• Add missing #include in code_distance-sve.h (#4219)
• Add the support for IndexIDMap with Cagra index (#4188)
• Add bounds checking to hnsw nb_neighbors (#4185)
• Add sharding convenience function for IVF indexes (#4150)
• Added support for building for MinGW, in addition to MSVC (#4145)

Changed

• Skip mmap test case in AIX. (#4275)
• Handle insufficient driver gracefully (#4271)
• relax input params for IndexIVFRaBitQ::get_InvertedListScanner() (#4270)
• Allow using custom index readers and writers (#4180)
• Upgrade to libcuvs=25.04 (#4164)
• ignore regex (#4264)
• Publish the C API to Conda (#4186)
• Pass row filters to Hive Reader to filter rows (#4256)
• Back out "test merge with internal repo" (#4244)
• test merge with internal repo (#4242)
• Revert D69972250: Memory-mapping and Zero-copy deserializers
• Revert D69984379: mem mapping and zero-copy python fixes
• mem mapping and zero-copy python fixes (#4212)
• Memory-mapping and Zero-copy deserializers (#4199)
• Use nullptr in faiss/gpu/StandardGpuResources.cpp (#4232)
• Make static method in header inline (#4214)
• Upgrade openblas to 0.3.29 for ARM architectures (#4203)
• Pass store_dataset argument along to cuVS CAGRA (#4173)
• Handle plain SearchParameters in HNSW searches (#4167)
• Update INSTALL.md to remove some raft references, add missing dependency (#4176)
• Update README.md (#4169)
• Update CAGRA docs (#4152)
• Expose IDSelectorBitmap in the C_API (#4158)

Fixed

• fix: algorithm of spreading vectors over shards (#4299)
• Fix overflow of int32 in IndexNSG (#4297)
• Fix Type Error in Conditional Logic (#4294)
• faiss/gpu/GpuAutoTune.cpp: fix llvm-19-exposed -Wunused-but-set-variable warnings
• Fix nightly by pinning conda-build to prevent regression in 25.3.2 (#4287)
• Fix CQS signal. Id] 88153895 -- readability-redundant-string-init in fbcode/faiss (#4283)
• Fix a placeholder for 'unimplemented' in mapped_io.cpp (#4268)
• fix bug: IVFPQ of raft/cuvs does not require redundant check (#4241)
• fix a serialization problem in RaBitQ (#4261)
• Grammar fix in FlatIndexHNSW (#4253)
• Fix CUDA kernel index data type in faiss/gpu/impl/DistanceUtils.cuh +10 (#4246)
• fix IVFPQFastScan::RangeSearch() on the ARM architecture (#4247)
• fix integer overflow issue when calculating imbalance_factor (#4245)
• Fix bug with metric_arg in IndexHNSW (#4239)
• Address compile errors and warnings (#4238)
• faiss: fix non-templated hammings function (#4195)
• Fix LLVM-19 compilation issue in faiss/AutoTune.cpp (#4220)
• Fix cloning and reverse index factory for NSG indices (#4151)
• Remove python_abi to fix nightly (#4217)
• Fix IVF quantizer centroid sharding so IDs are generated (#4197)
• Pin lief to fix nightly (#4211)
• Fix Sapphire Rapids never loading in Python bindings (#4209)
• Attempt to nightly fix (#4204)
• Fix nightly by installing earlier version of lief (#4198)
• Check for not completed
• Fix install error when building avx512_spr variant (#4170)
• fix: gpu tests link failure with static lib (#4137)
• Fix the order of parameters in bench_scalar_quantizer_distance. (#4159)

Deprecated

• Remove unused exception parameter from faiss/impl/ResultHandler.h (#4243)
• Remove unused variable (#4205)