Mojang has released today Minecraft Java Edition 1.21.5 and Bedrock Edition 1.21.70. We have the latest Bedrock support ready to go, while Java compatibility will follow in a few days. In the meantime, keep using 1.21.4.

This update includes some changes that break our chat support, and I think you will all agree that we can't do without this, so the actual servers upgrade will be delayed until that's ready and properly tested. Thank you for your patience!