An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Improved matchmaking performance
• Improved matchmaker behavior for users with less-than-ideal ping levels. The matchmaker should now be quicker to put you in the best available region.
• Improved matchmaker decision making for cross-region parties
• Added error messages when being ejected from the matchmaking queue due to connectivity or authentication failures, rather than the queue simply silently vanishing
• Fixed the matchmaking settings dialog frequently failing to display any datacenters
• Fixed multiple cases of in-progress casual matches abruptly terminating or failing to be assigned any new players if the game server ever loses connection to Steam
• Updated the Mountebank's Masque, Courtier's Collar, and Harlequin's Hooves cosmetic items to fix issues with their paint regions
• Updated cp_gravelpit_snowy
  • Fixed a script issue
  • Improved performance
  • Improved clipping