According to the changelog in the Gmod folder, here’s the updates;
[li]Fixed multiplayer dialog error[/li][li]Fixed rendering onto VGUI[/li][li]Fixed fast zombie crash[/li][li]Added menu_plugins for menu addon creators[/li][/ul]
Getting the “Server and Client version” do not match error, or “The server you are trying to connect to is running an older version of the game”? **This means the server has to be updated. Or you need to restart your Gmod **(usually the former).
As per usual, if you get stuck or find a bug, try and report it here or in the “Engine feedback thread” in the lua forum.
If you think that it’s a problem others can help with, then visit http://www.facepunch.com/forumdisplay.php?f=193 to see if anyone can assist you.[/release]
Otherwise, seems to be a pretty good update.