blog: Weaviate 1.39 release announcement - #3685
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Drops the gRPC-only note, the rescoreLimit advice, the 502 status-code sentence and the upgrade caution. Sets rescore_limit to the default 20, matching the docs. Plain-language pass over the rest.
Corrects the REST endpoint count as a version split (near-text in 1.39.0, four more in 1.39.1) and repins the compose sample to 1.39.1. Hybrid MMR is credited to v1.38.6 rather than 1.39. Drops the searchProbe bump, which shipped in 1.36.20/1.37.10/1.38.2. Documents DEFAULT_QUANTIZATION=rq-4. Removes client-support scoping from Boost, links the REST Search docs, and simplifies the performance and operational prose. Headings drop to h3 with toc_max_heading_level.
prajjwalyd
approved these changes
Aug 27, 2026
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Release post for 1.39: Boost API GA, MMR diversity selection GA, 4-bit RQ preview, experimental Search REST API, gRPC-Web, and automatic HNSW snapshots.
Every code snippet was run verbatim against
weaviate:1.39.0with client 4.23.0, and the printed output is captured from those runs.Two things to decide before merge:
date: 2026-08-19in the frontmatter. The slug is explicit so the URL is unaffected, but the display date should probably move to the publication day.EXPERIMENTAL_REST_SEARCH_ENABLEDandPOST /v1/search/{collection}/near-text, which have no narrative docs to link to yet.