Weaviate cuts 1.40.0-rc.0 with Namespaces GA and 4-bit rotational quantization.

The release candidate is declared feature complete with Namespaces at GA, vector index drop via Alter Schema at GA, HFresh MUVERA, and 4-bit RQ. Weaviate simultaneously shipped patches on three older lines; 1.38.15 backports node-level query admission control and a fix dropping class data the schema no longer names. The 4-bit RQ line is the one to read if you're sizing a vector index against memory rather than recall.