- Reintroduces the rabbitmq_peer_discovery_aws plugin that was unintentionally removed in 3.8.15.
- Drops Erlang 22 support, requires Erlang 23.2+ and adds support for upcoming Erlang 24 (breaking change with new feature).
- Upgrades core dependencies: Cuttlefish to 3.0.0 and Lager to 3.9.1 (minor update).
RabbitMQ 3.8.16
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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.