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:

• Players will now be randomly selected to participate in a survey at the end of Casual and Competitive matches
  
• Ongoing improvements to the matchmaking backend to improve match quality and reduce wait times
  
• Fixed air-blasts sometimes sending deflected projectiles in random directions when the Pyro is close to enemy players
  
• Fixed a case where players joining community bootcamp servers via the server-browser could not select a team
  
• Reduced the rate at which players can earn bonus points for extinguishing teammates
  
• Fixed a case where players could use the Halloween teleport spell to get outside the map
  
• Updated the localization files
  
• Community requests
  • Fixed Merasmus not being stunned by bomb-head players on community Halloween maps
    
  • Added the ability for community Halloween maps to call a truce during a Monoculus or Merasmus fight
    • Can be set via the game rules entity using the SetMapForcedTruceDuringBossFight input
  • Fixed energy weapons not hitting pumpkin bombs, Merasmus props, and RD robots
• Mann vs. Machine update
  • Fixed the Sentry Buster sound being orphaned if the Sentry Buster detonates while invulnerable
    
  • Fixed zombies not using the correct skin in Ghost Town
• Updated cp_snakewater_final1
  • Changes based on community feedback
• Updated pl_millstone_event
  • Updated bot navigation file, bots now use all routes, won't get stuck so easily and are smarter
    
  • Fixed woodpile spot where HHH could get stuck
    
  • Improved clipping on wood piles
    
  • Fixed missing rooftop texture
    
  • Fixed a few props flashing at certain angles
    
  • Fixed a spot in the last area where you could place stickies underground
    
  • Fixed Monoculus not getting stunned when hit by players exiting purgatory
• Updated cp_sunshine
  • Blockbulleted spiral staircase on the back of second
    
  • Added medium ammo to mid near choke
    
  • Removed clipping over wooden arch going into second from valley
    
  • Reduced the size of the wooden arch
    
  • Blockbulleted a few undersides of staircases on last that could catch projectiles
    
  • Removed a ladder on last