- Updated a Steam binary that may have been causing some Windows Dedicated Servers to crash

• Workshop now available for Left 4 Dead 2.
• Added Workshop Manager upload tool to Left 4 Dead 2 Authoring Tools.
• Add-ons screen now supports browsing the workshop and subscribing to workshop content.
• Moved add-on menu option to main menu
• Added the ability to filter add-on content by tags.
• Fixed scoreboard not showing the campaign name for custom campaigns.
• Fixed "Rescue" label not drawing correctly in the scoreboard for campaigns with more than five maps.
• Cleaned up DLC add-on file dependencies and simplified talker file structure - the manifest has changed.
• Fixed an issue where some L4D1 vocalizations that were also present in L4D2 weren't firing.
• Fixed transition dialog in L4D1 campaigns.
• Various fixes for character dialog including conversations, weapon spotting, defibs, and other misc audio.
• Added data on L4D1 characters so corresponding Talker rules would work (ie Elevator Speech in No Mercy)

Added Least Played mode to matchmaking! In this mode players can only choose from a list of their least played heroes. This mode is great for learning new heroes since everyone will be on equal footing.

GAMEPLAY
- Faceless Void: Fixed Backtrack working on HP Removal.
- Medusa: Mystic Snake now returns to restore you when it is blocked by Linken's Sphere.
- Meepo: Fixed an exploit with boot selection
- Riki: Fixed an issue with Permanent Invisibility on respawning.
- Slark: Fixed Impale based stuns not getting removed by Dark Pact.
- Issuing the haste command to the courier with the new UI no longer interrupts channeling spells on the primary hero.
- Fixed an exploit allowing items to be combined from multiple owners.
- Fixed Thunderclap being purgable.
- Fixed Malefice being purgable.
- Fixed Poison Touch being purgable and its interaction with BKB
- Fixed Brewmaster's Dispel not dealing damage to illusions.
- Fixed illusion damage interaction with other things that modify outgoing damage percentage (like Quelling Blade).
- Fixed being unable to target yourself with Force Staff if you are magic immune.
- Least Played Mode: The top 20 winning heroes for each player will be disabled. Heroes with less than 3 wins will not be disabled.

UI
- Fixed an exploit that let you bring up the panel to repick after the game started
- The Balanced Shuffle button now shows up for all non-league private lobbies.
- Fixed Nightstalker's darkness indicator persisting across games.
- Abandoned games are marked in the match history

BOTS
- Added Drow bot.
- Added Warlock bot (and Warlock Golem bot).
- Added support for bots using unique attack modifiers to harass while laning.
- Fixed bug that was causing bots to farm for buyback much earlier than they should.
- Fixed bug that was causing some bots to get stuck when trying to use a Tango.
- Bots that are lanemates of a carry will no longer jungle during the laning phase.
- If a hero is already jungling during the laning phase, additional bots will not jungle.

WORKSHOP
- Added Import Courier and Import Ward.
- Added support for animations and attachment points.
- Added Quicksave & Quickload import buttons to make it easy to redo a previous import.
- Added Centaur Warrunner, Batrider, Mirana, Keeper of the Light, Shadow Demon, and Slark.
- Preview now allows you to add multiple cosmetic items onto the preview Hero.
- Preview now has a Portrait camera view.
- Preview now allows you to select a skin on models with multiple skins.
- Preview now visualizes attachment points on models that require attachments to be valid.
- Improved validation of polygon and bone count of submitted models.

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 The Robo-Sandvich, The Festive Sandvich, The Festive Buff Banner, and The Festive Huntsman to the list of items allowed in Medieval mode
  
• The Prize Plushy can now get assists in Pyrovision
  
• Fixed a server crash caused by players bleeding to death
  
• Fixed spectator bots picking up the bomb in Mann Vs. Machine
  
• Fixed The Bazaar Bargain counting crit-boosted body-shots as headshots
  
• Fixed The Festive Holy Mackerel using the wrong sounds
  
• Fixed Strange Buff Banner and Strange Sandvich not always tracking usage
  
• Fixed seeing the fire texture on The Soldier's Stogie in DirectX 8
  
• Fixed missing style names for The Barnstormer
  
• Fixed the achievement "The Great Deflate" not counting certain Balloonicorn and Reindoonicorn items
  
• Updated paint effects for The Hot Dogger, The Salty Dog, The Counterfeit Billycock, and The Cold Killer
  
• Updated the localization files
  

Added Medusa!

GAMEPLAY
- Witch Doctor: Fixed Aghanim's Death Ward attacking Familiars and other psuedo heroes.
- Doom: Scorched Earth now only applies damage from Doom himself, not all the units affected by his aura.
- Pudge: Fixed being able to get units stuck using Refresher.
- Keeper of the Light: Fixed Recall interaction with non-hero units.
- Fixed Armlet and Power Treads interaction.

UI
- Added a Haste button to the courier HUD element.
- Added Mid Only game mode for private lobbies (disables other lanes and allows the same hero to be selected).
- The Announcer Share dialog has been replaced with a Shared Content dialog.
- Added a badge to the top bar to count the available shared items.
- If shared content is available in a game, a message is now printed pregame.
- Added Balanced Shuffle button to non-tournament private lobbies.
- Added All Chat private lobby option for enabling voice chat among all players.
- Fixed "Equip" appearing in the right click menu for some chests.

AUDIO
- Fixed hearing the wrong announcer after equipping a new item in the loadout.
- Fixed bugs with muting cobroadcasters causing other sounds to be muted.

BOTS
- The bots are now less likely to push with more heroes than what they deem necessary (less 5-man Dota). Probably needs some tuning.
- Made bots slightly less self-concerned when considering defending an ally. Also made them more likely to jump in if they have a slow or stun.
- Bots that are capable of jungling during the laning phase may now do so.
- If purchasing an item from the secret shop would complete an item, desire for going there is now increased.
- When their next item is purchasable, their desire to farm is signficiantly reduced.
- Fixed bad tuning that was causing bots to almost never farm lanes.
- Improved bot responsiveness to pings on Roshan.
- Bots are now less likely to assume that humans will purchase wards.

Release Notes for 1/9/2013

[MISC]

- Added Server Report panel. Player can use this panel to report server for things such as inappropriate content and bad performance etc.. This menu is accessible from the Pause Menu.
- Improved competitive matchmaking algorithm to further reduce wait times.
- Fixed 'rebuy previous' not working after the first round of rebuying.
- Spawn points are now randomized every round.
- Whitelisted con_filter convars for debugging.
- Fixed damage taken and given not being fully reset in modes that aren't round-based.
- Changing mp_warmuptime takes effect immediately.
- Added concommands mp_warmup_start and mp_warmup_end, which restart and early terminate warmup, respectively.
- Fixed exploit where cl_interp restrictions could be bypassed.
- Alias command no longer allows aliasing over existing convars and concommands.
- Fixed rare case of maps not matching requested game mode on dedicated servers
- The client-side headshot feedback sound no longer plays for the local client when damaging another player in the head with a grenade explosion or when shooting them in the head through another surface (penetration)
- Slightly reduced the client-side headshot feedback sound volume (spatialized sound is unaffected)
- Fixed nameplate flicker in free cam mode during demo playback.
- Fixed wall penetration on Linux dedicated servers
- Fixed exploit where grenade projectiles were used to boost teammates.
- Fixed a very rare server crash when firing a weapon.
- Improved the error message shown when finding a game fails to locate an acceptable dedicated game server formerly reported as DS.
- Improved memory management on servers with GOTV enabled.
- Changed holiday cheer level to match CS1.6.

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 new promo items
  
• Mann Vs. Machine
  • Fixed clients being able to issue mp_tournament_restart, tournament_readystate, and tournament_teamname commands
    
  • Fixed an exploit that allowed players to stun a mini-boss
    
  • Updated mvm_bigrock with some new func_nobuild areas
• Fixed a regression where minicrits were being affected by long-range damage fall-off
  
• Fixed a client crash related to arrows and bolts
  
• Fixed an exploit where certain player conditions could be used indefinitely
  
• Fixed clients seeing incorrect stats during changelevel
  
• Fixed the Tomislav playing firing sounds when it wasn't firing
  
• Fixed being able to score assists with yourself in certain situations
  
• Fixed being able to cross into enemy spawn rooms using the high-five taunt
  
• Fixed Festive versions of weapons not completing a set when equipped
  
• Fixed a client crash when viewing the Top Sellers tab in the Mann Co. Store
  
• Fixed styles not working properly for The Barnstormer
  
• Updated The Digit Divulger to allow skin to be seen in the knuckles and wrist area
  
• Updated The Cold Killer to add paintability and fix unusual effect placement
  
• Genuine-quality items and festive items that are otherwise tradable can now be listed on the Steam Community Market
  
• Updated the localization files
  

- Fixed Snowballs/Coals/Campfires proccing some passive abilities like Aftershock
- Fixed RoB, RoA and Radiance proccing Essence Aura
- Fixed a Roshan exploit with Clockerk

VISUALS
- Added Nightstalker darkness graphic to day/night clock.
- When calculating Net Worth, we no longer include the inventory value of the other Meepos.

GAMEPLAY
- Roshan is no longer pushed by Clockwerk's cogs.

UI
- Added Announcer previewing.
- Fixed backwards day/night indicator.

MISC
- Added Australia server region.
- Failed chunks are now retried when downloading replays. This should address the issue with Error 206.

BOTS
- Bots will now wake up if they're attacked during their initial 15 second slumber.
- Improved decision-making of who should buy wards on a team.
- Fixed Lich bot trolling teammates by using Dark Ritual on creeps that a teammate teleporting to.
- Swapped around Jugg bot's item build (he goes for ring of health and battlefury faster now).
- Carry bots are now allowed to move further from their base laning location when going for last hits.

Release Notes for 12/24/2012

[ MISC ]
* Added the ability to commend and report players from the player details view that can be accessed in the scoreboard.
* Number of competitive wins, and unique commendations are now shown in the main menu along with skill group.
* Competitive scoreboard will show number of competitive wins needed to display your skill group if you have not displayed it yet.
* Fixed movement on ladders ignoring the walk button. Now climbing ladders while holding walk is slow and silent, which fixes previous exploit of being able to climb ladders at fullspeed without making sound.
* Fixed failure to fire after weapon switching away from a reload and back (fake-reloading).
* Whitelisted tv_password convar to set GOTV password.
* Reduced fps in main menu when not connected to a server from 300 fps to 120 fps to help with laptops and desktop video cards doing excessive work. Exposed fps_max_menu convar to control fps in main menu.
* Added one more minute of grace period for players to reconnect to their competitive match before a cooldown for failing to reconnect is assigned. Cooldown for failing to reconnect is now assigned after player has remained disconnected for at least 4 minutes, not counting the round of disconnection and not counting the round in which 4 minutes grace period elapses.
* Fixed Hammer crash on exit.
* Added some holiday cheer.