6.4.0 (2026-11-02)
Features
- pubsub: Add CancellationSharer and HedgingScheduler (#9464) (43ef4dd)
- pubsub: Add enabled option to HedgingOptions (post-merge adjustments) (#9654) (cdb23f5)
- pubsub: Add HedgingOptions validation and token bucket (#9463) (764347a)
- pubsub: Add OpenTelemetry events and logging for hedged publish (#9465) (8636dba)
- pubsub: Integrate publish hedging into MessageQueue (#9466) (89fd786)