Hi Hytaler,
Chapter I: Out of the Breach went live on October 12. Everyone is talking about goblins, runestones and the Deepworks dungeon, fair enough. If you run a server though, the patch notes have a few lines that decide whether your players can join at all on day one. Same drill as with Update 6 for server owners, here's the server side boiled down.
1. Client and server have to match again
The protocol version got bumped and a bunch of packets changed their wire layout (UpdateBossBar, ItemMovementSettings, ShowEventTitle and more). In plain words: a player on the new client can't join a server still on the Update 6 build. Update the server first, then tell people to update.
If you run plugins, they need a rebuild against the...