Weaviate

Cassandra v1.36.12 - Secondary Index Fix

Breaking Changes none New Features none Fixes fix: handle secondary index size accumulation for varying key counts by @amourao in #11060 startup: speedup startup by checking db status more often by @asdine in #11064 fix: refactor bucket creation to use options for sec indices by @amourao in #11067 Full Changelog : v1.36.11...v1.36.12

17 Apr 2026

Cassandra v1.35.18 - Secondary Index Fix

Breaking Changes none New Features none Fixes fix: handle secondary index size accumulation for varying key counts by @amourao in #11060 startup: speedup startup by checking db status more often by @asdine in #11064 fix: refactor bucket creation to use options for sec indices by @amourao in #11067 Full Changelog : v1.35.17...v1.35.18

17 Apr 2026

Databases - v1.37.1: Compaction varying secondary key Fix

Breaking Changes none New Features none Fixes fix: handle secondary index size accumulation for varying key counts by @amourao in #11060 startup: speedup startup by checking db status more often by @asdine in #11064 fix: refactor bucket creation to use options for sec indices by @amourao in #11067 [MCP] Refactor permissions by @g-despot in #11037 Set export default path to empty by default by @dirkkul in #11068 Full Changelog : v1.37.0...v1.37.1

17 Apr 2026

v1.36.11 - Google AI Studio API Key support in multi2vec-google

Breaking Changes none New Features none Fixes fix: persist compression metadata after preloading vectors to avoid data loss on restart by @asdine in #11025 Fix S3 backup client: HomeDir path doubling and Initialize cleanup with path overrides by @jfrancoa in #11033 security: upgrade musl, musl-utils, zlib alpine packages by @antas-marcin in #11044 fix: improve error handling in optional tokenizers initialization by @amourao in #11035 fix(multi2vec-google): add support for Google AI Studio API Key headers by @antas-marcin in #11045 Full Changelog : v1.36.10...v1.36.11

17 Apr 2026

Weaviate v1.37.0 Release: MCP Server, Tokenizers, Backups & More

Breaking Changes none HFresh (Preview) Extensive improvements including numerous performance optimizations reducing memory usage, disk writes, and allocations. HFresh increase max posting size floor by @trengrj in #10714 hfresh / geo: keep dequeuing during backups by @asdine in #10815 queue: consider storagestate.ErrStatusReadOnly a transient error by @asdine in #10927 hfresh: improve init logic by @asdine in #10930 queue: add missing Pause call by @asdine in #10966 Add auto category for HFresh by @trengrj in #10972 hfresh: fix metrics reporting by @asdine in #10999 Secure MCP Server (Preview) Secure Built-In Model Context Protocol (MCP) server interface. This allows AI agents (such as Claude, IDEs, etc.) to natively read and write to Weaviate without requiring custom code. The implementation shifts Weaviate from a passive retrieval engine to an active "long-term memory" for agentic workflows, supporting hybrid search, RAG, and multi-tenancy out of the box. Introduce native MCP API by @tsmith023 in #8245 MCP: Refactor file structure and add custom argument/response descriptions by @g-despot in #10948 BlobHash property type New BlobHash property type, which automatically saves blob data as hashes in store, greatly reducing the disk space needed to work with blob data. feat: add BlobHash property type by @antas-marcin in #10763 Extensible tokenizers (Phase 1) Evolves tokenization support in Weaviate from an English-centric, operationally gated capability into a self-serve, observable, and extensible foundation for agentic and multilingual workloads. The improvements are mainly for latin languages, with better support for CJK languages coming in phase 2. feat: add tokenizer endpoint and middleware integration by @amourao in #10863 refactor: update TestPropertyTokenize to use collection_factory and weaviate_client by @amourao in #10902 feat: add accent insensitive processing options for text properties by @amourao in #10860 feat: custom stopword presets by @amourao in #

17 Apr 2026

VectorDB v1.35.17 Release - HNSW improvements and backup enhancements

Breaking Changes none New Features none Fixes feat: add baseURL validation support by @antas-marcin in #10878 feat(backward-compatibility): descriptive error on downgrade path if module is not avaliable by @moogacs in #10876 test: improve async deletion verification in crash recovery test by @jeroiraz in #10886 Queue backup by @asdine in #10868 deps(security): bump github.com/buger/jsonparser to v1.1.2 by @antas-marcin in #10898 Add missing close in s3 client by @dirkkul in #10903 queue: transfer metrics ownership to scheduler by @asdine in #10916 Pin dependencies using SHA hashes instead of tags by @dirkkul in #10907 Add linter + workflow for hidden characters in PR by @dirkkul in #10909 Sparse visited lists hnsw only by @abdelr in #10893 Fix two potential issues in hidden character linter by @dirkkul in #10922 fix(offloading): reject tenant updates during FREEZING/UNFREEZING transitional states by @moogacs in #10951 fix: use len check instead of nil check in compression preload loops by @rlmanrique in #10950 fix(raft-apply): allow updateStore to proceed on partial tenant update by @moogacs in #10900 Return error when trying to filter with float on int property by @dirkkul in #10978 Update vulnerable black version by @dirkkul in #10982 Update all dependencies with security issues by @dirkkul in #10988 hnsw: add support for compactv2 downgrades by @asdine in #10992 Validate base backup id like normal id by @dirkkul in #10997 Implement backup/restore of INACTIVE tenants by @tsmith023 in #10851 security(Dockerfile): upgrade libcrypto3, libssl3, openssl to latest versions by @antas-marcin in #11003 Minor improvements to the codebase for INACTIVE tenant backups by @tsmith023 in #11001 fix: persist compression metadata after preloading vectors to avoid data loss on restart by @asdine in #11025 Fix S3 backup client: HomeDir path doubling and Initialize cleanup with path overrides by @jfrancoa in #11033 security: upgrade musl, musl-utils, zlib alpine packages by @antas-mar

15 Apr 2026

v1.37.0-rc.1 Release - New Features: Tokenizers, Backups, MCP Server

This is a release candidate for the upcoming v1.37.0 release. A release candidate (RC) means the release is considered feature complete and has finished beta-testing. Any issues discovered during the RC phase will lead to new rc releases. The final rc release becomes the stable release. We're happy for your feedback about this pre-release. This pre-release contains: Extensible tokenizers (Phase 1) Incremental backups (GA) Internal cluster comms: gRPC & Security Hardening Async Replication Prod Readiness (GA) Alter Schema - Drop vector index (GA) Secure MCP Server (Preview)

13 Apr 2026

v1.36.10: Backup inactive tenants now supported

Breaking Changes none New Features none Fixes fix(offloading): reject tenant updates during FREEZING/UNFREEZING transitional states by @moogacs in #10951 fix: use len check instead of nil check in compression preload loops by @rlmanrique in #10950 fix(raft-apply): allow updateStore to proceed on partial tenant update by @moogacs in #10900 Return error when trying to filter with float on int property by @dirkkul in #10978 Update vulnerable black version by @dirkkul in #10982 Update all dependencies with security issues by @dirkkul in #10988 Add auto category for HFresh by @trengrj in #10972 hnsw: add support for compactv2 downgrades by @asdine in #10992 fix: return query profile data for GroupBy queries by @byronvoorbach in #10980 Validate base backup id like normal id by @dirkkul in #10997 Implement backup/restore of INACTIVE tenants by @tsmith023 in #10851 security(Dockerfile): upgrade libcrypto3, libssl3, openssl to latest versions by @antas-marcin in #11003 Minor improvements to the codebase for INACTIVE tenant backups by @tsmith023 in #11001 Full Changelog : v1.36.9...v1.36.10

11 Apr 2026

v1.37.0-rc.0 Release - New Tokenizers, Backups, and Schema Drop

This is a release candidate for the upcoming v1.37.0 release. A release candidate (RC) means the release is considered feature complete and has finished beta-testing. Any issues discovered during the RC phase will lead to new rc releases. The final rc release becomes the stable release. We're happy for your feedback about this pre-release. This pre-release contains: Extensible tokenizers (Phase 1) Incremental backups (GA) Internal cluster comms: gRPC & Security Hardening Async Replication Prod Readiness (GA) Alter Schema - Drop vector index (GA)

3 Apr 2026

Elasticsearch 1.36.9 - HNSW visited lists and backup improvements

Breaking Changes none New Features none Fixes test: improve async deletion verification in crash recovery test by @jeroiraz in #10886 Implements AUTHENTICATION_OIDC_INSECURE_SKIP_TLS_VERIFY by @dudanogueira in #10813 Queue backup by @asdine in #10868 deps(security): bump github.com/buger/jsonparser to v1.1.2 by @antas-marcin in #10898 feat: add on-demand query profiling support by @byronvoorbach in #10696 Add missing close in s3 client by @dirkkul in #10903 queue: transfer metrics ownership to scheduler by @asdine in #10916 Pin dependencies using SHA hashes instead of tags by @dirkkul in #10907 Add linter + workflow for hidden characters in PR by @dirkkul in #10909 Sparse visited lists hnsw only by @abdelr in #10893 Fix two potential issues in hidden character linter by @dirkkul in #10922 hfresh: improve init logic by @asdine in #10930 Full Changelog : v1.36.8...v1.36.9

3 Apr 2026

Weaviate v1.36.0-rc.0 Preview: Server-side batching, TTL, and HFresh

Release candidate introduces server-side batching, object TTL, backup restore cancellation, schema alteration, and HFresh capabilities

10 Feb 2026

Weaviate v1.36.0-rc.0 Release: Server-Side Batching, TTL, Backup Restore

Release includes server-side batching, object TTL, backup restore cancellation, schema alteration, and HFresh capabilities

10 Feb 2026

Weaviate v1.36.0-rc.0 Release: Server-side Batching, TTL, Backup Restore

New release candidate with server-side batching, object TTL, backup restore cancellation, schema alteration, and HFresh capabilities

10 Feb 2026

Weaviate Launches New Learning Platform

Weaviate has introduced a new online learning platform to help developers learn and use their AI database and tools

Date not specified

Weaviate v1.35.7 Release: RQ Race Compression and Raft Cluster Node Information Fix

Minor release addressing race compression and cluster node information issues across multiple Weaviate versions

4 Feb 2026

RQ Platform Maintenance Releases 1.33 - 1.35

Multiple versions (1.33, 1.34, 1.35) received fixes for RQ race compression, Raft cluster node information, async replication, and metrics improvements

4 Feb 2026

Weaviate v1.35.6: Async Replication Improvements

Enhanced async replication capabilities for distributed vector database operations

29 Jan 2026

Weaviate v1.35.6 Release: Async Replication Improvements

Updates to async replication functionality enhancing distributed system performance

29 Jan 2026

Weaviate Async Replication Improvements - v1.35.6 & v1.34.13

Improvements to async replication mechanism across multiple version branches (v1.35.6, v1.34.13)

29 Jan 2026

Weaviate: Multiple Version Labels Active (1.25-1.27)

Multiple version labels active in GitHub issues, indicating ongoing development and version progression across 1.25, 1.26, and 1.27 releases

Date not specified