Changelog

[Unreleased]

Added experimental ChildWorkflowOptions.Builder.setVersioningOverride and VersioningOverride.OneTimeVersioningOverride for explicit pinned, auto-upgrade, and one-time child workflow routing. Invalid child overrides are reported as InvalidVersioningOverrideFailure under ChildWorkflowFailure. Child workflow overrides and one-time routing require Temporal Server 1.32.0 or later.
WorkerFactoryOptions.Builder.setLoggerTagPrefix that can be used to customized structured logging tags (MDC keys) set by Temporal SDK in worker context.

Release notes for all future releases are now in a single CHANGELOG.md file. releases directory with old release notes is kept for historical reference.
Added versioned scheduling for asynchronous Temporal stub calls. When enabled, switching between a stub method reference such as Async.function(activities::first) and an equivalent lambda such as Async.function(() -> activities.first()) preserves command order during replay. The call runs on a workflow thread, so workflow outbound interceptors can wait while scheduling it. The flag remains disabled by default, and existing unflagged histories retain their previous behavior.
TemporalDevServer, TemporalDevServerOptions, TestWorkflowEnvironment.startLocal, and the useDevServer methods of TestWorkflowRule and TestWorkflowExtension are no longer marked experimental. TemporalDevServerOptions remain specific to the Temporal CLI dev server implementation and may no longer be valid if that implementation changes.

Test server now honors retry expiration deadlines that fall exactly on a whole second. Previously such deadlines were ignored and retries were scheduled past them instead of failing with RETRY_STATE_TIMEOUT.

Changelogs for releases 1.40 and older are available in releases directory.