- Default TLS upgraded to 1.2 and the force_tls_12 flag removed; users must set min_tls_version to use older TLS versions (breaking/security).
- Introduced required infrastructure for future L7 protocol classification, added Windows Docker Process Isolation support, enabled OTLP ingest V2 defaults, and made several new feature flags (e.g., config file polling, container lifecycle...
- Extensive bug‑fixes and enhancements: improved APM sampling, DogStatsD metadata caching, PDH counter localization, cluster name discovery via node label, and deprecation of the Rare Sampler (now disabled by default).