- Introduces Khepri as a Raft‑based alternative schema store, adds MQTT v5 support, consumer‑side stream filtering, and a new AMQP 1.0‑based message container format
- Requires Erlang 26 (nodes fail on older versions) and includes breaking changes such as CQv2 queue storage recommendation, MQTT config rename, and default TLS peer verification
- Deprecates the rabbitmqctl node health check (now a no‑op) and launches a revamped RabbitMQ website with improved documentation