Weaviate

Weaviate now supports GA namespaces for control-plane and data isolation between tenants on a shared cluster, GA dropping of vector indexes to reclaim disk space, a preview reindex feature for changing property index types, and a new REST Search API with hybrid, near-object, near-vector, and aggregate endpoints enabled by default. It also adds 4-bit rotational quantization (RQ4), opt-in deduplicated backups that archive converged shards once and restore to every replica, and performance optimizations for HFresh vector indexing and async replication.

Matters for: Teams running multi-tenant SaaS platforms on a shared Weaviate cluster who need per-tenant isolation, schema flexibility, and reduced backup storage costs.