- Added PromQL step(), min() and max() on durations, stricter NaN handling, and multiple histogram fixes with performance optimizations.
- Introduced a new /v1/status/tsdb/blocks API endpoint and template helpers toDuration() and now(), plus UI options to suppress info/warning query messages.
- Enhanced OTLP support (scope metadata as labels, new escaping strategy, optional type/unit labels), added discovery namespace metadata, and fixed numerous bugs including config validation errors, TSDB panics, and scraping memory corruption.
3.6.0 / 2025-09-17
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Deprecate non‑true/all values for the stats query parameter on /api/v1/query and /api/v1/query_range, now returning a warning and slated for removal in the next major release.
Updated golang.org/x/text to v0.39.0 and google.golang.org/grpc to v1.82.1, fixing CVE‑2026‑56852 and GHSA‑hrxh‑6v49‑42gf.