Prometheus 3.5.0 LTS is released

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Bryan Boreham

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Jul 14, 2025, 12:54:30 PMJul 14
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We are pleased to announce that Prometheus 3.5 has been released. 3.5 is a Long Term Support (LTS) release; see release https://prometheus.io/docs/introduction/release-cycle/

There are a number of new features, and no known breaking changes in this release:

* [FEATURE] PromQL: Add experimental type and unit metadata labels, behind feature flag `type-and-unit-labels`. #16228 #16632 #16718 #16743
* [FEATURE] PromQL: Add `ts_of_(min|max|last)_over_time`, behind feature flag `experimental-promql-functions`. #16722 #16733
* [FEATURE] Scraping: Add global option `always_scrape_classic_histograms` to scrape a classic histogram even if it is also exposed as native. #16452
* [FEATURE] OTLP: New config options `promote_all_resource_attributes` and `ignore_resource_attributes`. #16426
* [FEATURE] Discovery: New service discovery for STACKIT Cloud. #16401

Also many enhancements, performance improvements and bug-fixes. Full changelog and binaries are available at

https://github.com/prometheus/prometheus/releases/tag/v3.5.0

Bryan Boreham
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