Team Fortress 2
- Australian Christmas has begun!
- Added community-contributed winter event items
- Added new Grordbort Pyro and Engineer item sets
- Added the "Valve Gift Grab 2011 – TF2" achievement
- Added Naughty and Nice winter keys to the Mann Co. store
- Added a new Valve-authored control point map: Foundry
- added 12 achievements for Foundry
- added achievement reward milestone reward for Foundry achievement
- Added UGC Highlander medals
- Relaxed some restrictions on what misc items can be equipped simultaneously
- Additional improvements for client stability
- Updated the localization files
Part 1 here.
Part 2 here.