- Requires Erlang 25+; nodes on older Erlang versions will refuse to start (breaking change).
- Automatic node removal now deletes quorum‑queue replicas before removing the node from the cluster (bugfix).
- Adds boolean setting quorum_queue.property_equivalence.relaxed to relax property checks on redeclaration of quorum queues (feature).
RabbitMQ 3.11.16
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Core server bug fixes: duplicate direct‑reply deliveries, quorum queue recovery issues, malformed AMQP 1.0 frames, topic‑exchange wildcard limits, and OAuth proxy header handling.