RabbitMQ 4.0 introduces full support for Khepri, AMQP 1.0 as a core protocol, sub-linear quorum queue recovery, and priority support for quorum queues. Classic queue mirroring is removed, and a new Local Random Exchange type is added.
https://alternativeto.net/news/2024/9/rabbitmq-4-0-released-with-khepri-support-enhanced-amqp-1-0-and-improved-queue-features/