The Patch includes:

• 3 new Multiplayer maps: Battery (mp_drum), Breach (mp_bgate), Revolution (mp_vodka)!
• New Nazi Zombie map: Der Riese (nazi_zombie_factory), an all-new Zombie map set in a secret Nazi research facility featuring the Pack A Punch Machine, Teleporters, and many more undead hordes!
• Exploits pertaining to Demo playback.
• Favorites list now ignores filter settings.
• Fixed S&D round counting error when roundlimit is reached.
• New feature: in-game Add to Favorites.
• Friends list: green online indicator.
• Starting the game in Safe Mode will no longer toggle the “Soften Smoke Edges” graphic option.
• Fixed various crashes.
• Mods: Client will no longer join a modded Co-op server via Game Invite unless they have that mod loaded.
• Mods: Client running a mod will be asked to unload the mod if they attempt to join an unmodded server.
• Mods: All singleplayer levels can now be run with a mod loaded.