📝 Changelog entry for TimescaleDB 2.27.0

[brandonpurcell-dev]

Describe your changes

Adds the changelog entry for TimescaleDB 2.27.0 to src/content/docs/get-started/news/new.mdx.

Highlights covered:

• Bloom filter pruning extended to UPDATE, DELETE, and UPSERT (up to 160× faster on selective workloads).
• Broader vectorized execution on the columnstore — including vectorized filters via the standard Postgres function path, vectorized aggregation with time_bucket() filters, and scalar array operation pushdown.
• New experimental, opt-in CAgg query rewriter (timescaledb.enable_cagg_rewrites).
• Compress as part of the continuous aggregate refresh policy via compress_after_refresh.
• Smarter chunk exclusion (IN/ANY on open time dimensions; Batch Sorted Merge on more unordered chunks).
• Quality-of-life items: index creation progress reporting, auto segmentby for direct compress, ALTER TABLE … RESET on materialization hypertables, ENABLE/DISABLE TRIGGER on hypertables.
• Two backward-incompatible items called out (int2 bloom filter index bug blocking upgrade; composite bloom filter metadata rename).
• PostgreSQL 15 EOL reminder.

TimescaleDB 2.27.0 was released on GitHub on May 12, 2026 and made available on Tiger Cloud on May 19, 2026.

Affected pages

• /get-started/news/new

Related Issues

Issue: #

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Project	Deployment	Actions	Updated (UTC)
tiger-data-docs	Ready	Preview, Comment	May 26, 2026 1:13pm

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