TL;DR

• Erlang 24 will ship in May and it offers significant performance gains to RabbitMQ users
• Supporting Erlang 24 and 22 at the same time is not feasible, so in early May 2021, Erlang 22 support will be dropped
• If you run on Erlang 22, upgrade to 23.2 today: it should be a drop-in replacement
• Users of the RabbitMQ Kubernetes Operator, the Docker community image and modern releases of VMware Tanzu RabbitMQ for VMs are not affected as those projects all use Erlang 23 today