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:DM)

• 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