We've released a mandatory update for TF2. The notes for the update are below. The new version number is 2327748.
- Fixed a client crash related to particle effects 
- Fixed the quickplay menu not remembering the Advanced Options settings after using the Play Beta Maps option
- Fixed the Festive Sapper not having a skin for the Blu team 
- Added a new startup music track from Expiration Date 
- Updated the Conga taunt to play sounds on the client instead of the server 
- Updated several materials to fix issues caused by mat_picmip 
- Updated the localization files 
- Updated beta map pl_cactuscanyon 
   -- Redesign of the first half of stage 2. Blu team now pushes up the first hill 
   -- Removed the death pit in the first barn building of stage 1
   -- Ammo increased in stage 2
   -- Fixed Red building in the spawn room of stage 2
- Updated beta map rd_asteroid 
   -- Mode changes 
      --- Power Cores and Reactor Cores now add their point value to a team's score over time 
      --- Reduced the rate at which points can be stolen from 15 per second to 10 per second 
      --- Robots now heal 5 health per second to nearby friendly players 
      --- The HUD has been reworked 
            ---- Inverted the layout to better represent the layout of the level 
            ---- Added progress bars to represent each team's score 
            ---- Potential point gains from stolen reactor cores are now visually represented on the score progress bars 
            ---- Thief icon now moves across the score board relative to the thief's position in the level 
            ---- Updated thief icon to represent both the color of the power core stolen and the color of the thief's team 
      --- Added new strings to the win panel that explain why the team won 
      --- Replaced the current "points being stolen" sound with a new sound 
      --- Added better collision hulls to robot models 
      --- Reworked robot skins to reduce similarity to the Ubercharged skin 
      --- Sentry guns no longer target Ubercharged robots 
   -- Map changes 
      --- Layout has been adjusted with the overall goal of improving visibility of teammates 
      --- Removed spawn teleporter 
      --- Reduced map size by removing the front lobby and cave sections 
      --- Added terrain paths on the sides of the mid bridge 
      --- Increased width of the mid bridge 
      --- Removed doors that locked when A and B robots were active 
      --- Robots have been rearranged: 
            ---- A robots now roam the bridge above the water 
            ---- B robots now roam around the floor in front of the vault 
            ---- C robots now roam around the upper deck 
      --- Added more line of sight blockers to the water room to provide better cover during combat engagements 
      --- Reduced travel time for the water flanking route under the interior bridge 
      --- Added a drop down to enter the water room from the front door staging area 
      --- Increased size of the glass room near C robots to provide flanking cover to use against sentries that are placed at the corner of the upper deck 
      --- Increased width of vault corridors 
      --- Reworked vent route that leads to the vault, no longer need to crouch jump on exit 
      --- Moved left spawn exit forward to reduce effectiveness of spawn camping 
      --- Added a resupply cabinet to the right side spawn exit 
      --- Re-positioned health and ammo pickup locations 
      --- Added ramp collision to stairs 
      --- Changed setup time from 60 seconds to 40 seconds 
      --- Changed power reactor max return time from 90 seconds to 60 seconds 
      --- Fixed gap in the death pit that allowed players to survive