- Requires Erlang 22.3/23.x and adds detailed upgrade guidance, especially for older 3.7.x installations.
- Core bug fixes: node name overflow resolved; consumer utilisation metric renamed to consumer capacity in Management and Prometheus plugins; AMQP 1.0 plugin crash fixed.
- Federation enhancements (quorum queues federation, new channel‑use‑mode option) and OAuth2 backend improvements (configurable settings, JWKS token support); various dependency upgrades.
RabbitMQ 3.8.13
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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.