- Docker images are now slimmed down for security, removing many tools and binaries, deprecating several images, and switching to embedded Sprig templating; Helm charts require a minimum version of 0.73.2, making this a breaking change.
- metrics.Tag is now a concrete struct (breaking API change) and worker versioning APIs now propagate routing config asynchronously with new safety checks and a TemporalUsedWorkerVersions search attribute.
- Feature updates include public preview of Task Queue Priority & Fairness, new dynamic configs, OpenSearch 2+ visibility support, external payloads claim‑check pattern, and increased limits for custom search attributes.