Updates to Team Fortress 2, Day of Defeat: Source and Half-Life 2: Deathmatch have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Source Engine Changes (TF2, DoD:S, HL2 M)
M)- Updated some Big Picture features
 Additional improvements for client stability
 
Team Fortress 2- Australian Christmas has begun!- Added community-contributed winter event items
 
- Added three new community weapons- The Vaccinator
 
- The Loose Cannon
 
- The Rescue Ranger
 
- Added Naughty and Nice winter keys to the Mann Co. Store
 
- Mann Vs. Machine- Added a new tour of duty with unique loot:- Operation Mecha Engine, with 3 new advanced skill missions
 
- New map mvm_bigrock
 
- New Engineer Botkiller items
 
- Added new Engineer robot
 
- Added new Strange Filter items to the Mann Co. Store to support community map makers
 
- Added new checkout dialogs and taunt-activated effect to raise awareness for Community Map Stamps
 
- Added +context_action command (defaults to X for controllers). This will use the action slot if your Canteen contains a charge and will taunt otherwise3
 
- Added +attack3 command (defaults to middle-mouse button)
 
- Added Adult Swim items to the Mann Co. Store
 
- Fixed an exploit that allowed players to be permanently invulnerable
 
- Fixed the Pyros airblast not working correctly when facing downhill
 
- Made Force-A-Nature pushback more consistent
 
- Updated pl_barnblitz- Fixed various map exploits
 
- Updated sd_doomsday- Fixed various map exploits
 Updated the localization files
 
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