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:

• Added missing files for Taunt: The Travel Agent
• Added No Hat styles for the Cozy Cover-Up
• Added VScript support for HIDEHUD_MATCH_STATUS flag to hide the Match Status panel
• Added a borderless window option to video settings
• Added bicubic lightmaps (from Half-Life 2: 20th Anniversary Update)
• Added radial fog (from Half-Life 2: 20th Anniversary Update)
• Added support for Steam Networking
• Made the default server name for listen servers include the player's name
• Made the game launch in native resolution by default instead of 640x480
• Client-side prediction fixes (these fix 'jank'/rollback in certain situations)
  • Fixed a prediction bug where if the player was moved on the client, their input-based movement for that tick was not taken into account in non-player actions
  • Improved prediction for walking on props and other entities
  • Made certain client-side entities only trigger local prediction errors
    • e.g. If the viewmodel experiences a prediction error, the player will not experience a prediction error
  • Fixed prediction of viewmodel sway
  • Fixed a prediction error regarding weapon idle animations
• Fixed certain breakable props not gibbing correctly
• Fixed an issue where certain variables like position would not be updated correctly to match the server in certain situations
• Fixed the player's base velocity (eg. conveyors, moving items etc.) getting subtly out of sync from client/server
• Fixed players being able to spam duel cancellation messages for a duel that doesn't exist
• Fixed not being able to join community servers via Steam invites or game info
• Fixed lighting position discrepancies for cosmetic items, weapons, and viewmodels (community fix from ficool2)
• Fixed Equipped label overlapping attribute icons in the loadout menu (community fix from Lindon)
• Fixed an issue with props and team colors when taunting with Australium weapons
• Fixed the Voices from Below effect not working when taunting with the Highland Hound set equipped
• Fixed player voice commands being abruptly ended when the player enters shallow water
• Fixed incorrect number on the Geneva Contravention achievement icon
• Fixed the Military Style for The Surgeon General to stay properly semi-visible at all angles
• Fixed some classes missing the BLU team material for That '70s Chapeau
• Fixed the Spanish-Latin America option being displayed as English in the Settings menu
• Fixed the MOTD dialog not working for Spanish-Latin America
• Updated attribute descriptions for The Scottish Resistance and the Stickybomb Jumper to use 'stickybomb' instead of 'pipebomb'
• Updated equip_region settings for The Little Bear, The Heavy-Weight Champ, The Grand Duchess Tutu, and the Combat Slacks to fix unnecessary conflicts
• Updated the Spooky Night and Ominous Night Unusual taunt effects to fix a visual bug (Thanks Kiffy!)
• Updated koth_overcast_final to improve optimization
• Updated ctf_applejack
  • Added block bullets to some stores
  • Unblocked a window at mid, allowing Snipers to shot across the middle hut
  • Removed the missing texture in BLU spawn
  • Gave a chicken a friend, because friendship is magic
• Updated cp_fortezza
  • New radio model for spawn rooms
  • Changed sentry shack ammo pack on last to a medium
  • Adjusted health pickups throughout the map
  • Changed kill volume on cap A double doors to be more consistent with visuals
  • Improved bot support (Thanks Star Bright)
  • Detail pass
• Updated pl_patagonia
  • [Stage 1]
    • Fixed some RED bots stuck forever trying to make an impossible jump on the stairs outside spawn
    • Fixed the cart not capping the first point on extremely rare occasions
  • [Stage 2]
    • Improved optimization
    • Fixed a nodraw floor near the first BLU spawn train bridge waterfall
    • Fixed 3D skybox looking pitch black for players using mat_hdr_level 2
  • [Stage 3]
    • Improved optimization
    • Fixed wrap assassin baubles colliding with a solid func_brush bounding box outside BLU spawn
    • Removed the platform above the open choke of the last point
    • Added an additional path to the window overlooking the open choke of the last point
    • Fixed RED bots getting stuck on a solid fence outside the RED spawn
    • Fixed 3D skybox looking pitch black for players using mat_hdr_level 2