An update for Left 4 Dead is now available. Please run hldsupdatetool to receive it. The specific changes include:

- Removed the "Are you ready to play Versus?" confirmation
- Fixed a crash when using mouse wheel or keyboard to select Campaign chapters
- Fixed sv_steamgroup_exclusive servers advertising for public lobbies
- Restored the ability to vote for a new campaign in Versus mode

Jason

A required update for Team Fortress 2 is now available. Please use hldsupdatetool to receive it. The specific changes include:

Linux Dedicated Server:
- Improved connection logic to help servers that aren’t automatically reconnecting to Steam, and added extra logging to track it
- Added extra data gathering to help us understand and improve Linux performance

Team Fortress 2:
- Changed cl_flipviewmodels so it can no longer be set while connected to a server
- Fixed problem with Loadout Menu "Back" button not preserving the currently equipped weapon
- Fixed a case where an observer could set the observed player's view models
- Fixed the Heavy's punches not matching mouse button presses when the view models are flipped
- Fixed Bonk! ammo count exploit after using a regeneration locker
- Fixed Dead Ringer damage reduction exploit involving Spy taunting
- Reverted Force-A-Nature and airblast knockback on disguised Spies, so that they can once again be knocked back

Missed notes from previous update:
- The Ambassador no longer penetrates buildings
- Removed the movement speed penalty on The Razorback

A required update for Left 4 Dead is now available. Please run hldsupdatetool to receive it. The specific changes include:

Client:
- Removed an infinite ammo exploit for molotovs

Add-on Campaign Support:
- Players download third party campaigns as single .VPK file
- Players can manage and select add-on maps and campaigns via game UI
- Added matchmaking support and download/update prompt for add-on campaigns
- Custom campaign support in Leader boards
- If not already registered, left4dead.exe registers .VPK extension to allow automatic install of add-ons
- Servers and the steam API have been extended to allow servers to send up a list of keys for matchmaking up to 1200 bytes in size

Left 4 Dead Authoring Tools:
- Fixed missing fgd error
- Added vpk.exe command line tool for extracting, creating, and appending .VPK files
- Removed info_versus (not used)
- Added info_gamemode which fires outputs for Coop, Versus or Survival depending on what game mode the map is loaded in
- Updated tutorial_standards example map, repackaged as 'Dead Line' campaign example add-on
- Sample content now includes source files for official maps

Jason

General
- Added an option to the advanced multiplayer menu to select left or right handed view models
- Fixed a bug where a spectator's wearable items could be seen floating around the player they were spectating
- Fixed a bug where a fake Spy hand would appear on the screen of other players
- Custom death animations now only play 25% of the time
- Fixed teleporters not being build-able in some places where they should be (such as within the pit at the end of Badwater Basin)
- Fixed rare client crash on connection and level change
- Removed refract from water ripples caused by bullet impacts for performance reasons
- Added log entries for player extinguished events using the medigun, jarate, flamethrower and dispenser
- Started tracking localization settings to help make decisions regarding localization in the future
- Fixed the blank progress bar in the upper-left of the screen when the client scheme is reloaded

Mapmaker requests
- Added spawn flag to func_respawnroomvisualizer that allows it be non-solid to players
- Added SetSolid input to func_respawnroomvisualizer to change solidity to players dynamically
- Added OnWonByTeam1 and OnWonByTeam2 outputs to the TFGamerulesProxy

Sniper
- Fixed a bad detection case in the "Friendship is Golden" achievement
- Changed the description of the "Triple Prey" achievement so it better describes how to get it
- Critical arrows now have a trail and correctly deal enhanced damage
- The Huntsman now defaults to be right handed
- Friendly arrows will no longer trigger the near miss sound on you
- Fixed several sources of floating arrows

Spy
- Fixed disguised Spies occasionally looking like they have invulnerability, instead of the correct fake Spy mask
- Disguised spies will no longer lose their disguise weapon when they interact with a weapon locker
- Fixed a bug where the spy's watch would randomly change models during play
- Fixed uncloaked spies flickering in and out of the cloak effect when taking damage
- The Cloak and Dagger now always regenerates at its intended rate. Previously it only regenerated at the correct rate when the spy was cloaked
- Increased the Cloak and Dagger regeneration rate slightly
- Capped the rate of energy loss from moving faster than run speed (falling / air toss) while cloaked with the Cloak and Dagger
- The Dead Ringer's cloak consume rate has been slightly reduced, giving about an extra second of cloak time on a full meter
- Emerging from the Dead Ringer's cloak now drains up to 40% of the cloak meter instead of 100%. This drain only happens if the meter is at least 60% full
- The Dead Ringer's cloak meter can now be regenerated from ammo sources
- The Ambassador now only crits when fully accurate and no longer penetrates enemies
- The Spy can no longer change weapons from the knife while shocked by the Razorback
- Force-A-Nature & Flamethrower air blast knockback effects no longer work on disguised spies
- Fixed disguised Spies showing the wrong teleporter effects when using an enemy teleporter

Engine
------
Fixed Day of Defeat: Source server crash when loading dod_jagd.


Team Fortress 2
---------------
Added a "Discard" button to the item pickup panel.
Added a backstab custom death animation to the Heavy.
Changed default for tf_arena_use_queue to 1. This was the original behavior prior to the last update.
Changed the Dead Ringer so it can be activated while carrying the flag.
Increased the Force-A-Nature's damage by 10%.
Fixed not being able to reflect arrows with the Flamethrower.
Fixed The Huntsman drawing a muzzle flash under lagged conditions.
Fixed the background color of the Spy disguise panel not always matching his disguise team.
Fixed idle players being kicked when the server has tf_arena_use_queue set to 0.
Fixed Spies not being able to sap a building if an enemy player was colliding with the building.
Fixed getting a real target ID on an enemy Spy that's disguised as one of your teammates if you are disguised as an enemy.
Fixed the Ambassador not shooting enemy sticky bombs.
Fixed Spies being able to automatically cloak after uncloaking at the moment of a weapon switch.
Fixed Jarate instantly exploding when thrown in some places, like the final area of Badwater.
Fixed spectators not having their items removed when they enter spectator mode.
Fixed Sniper "civilian" exploit where players could crash the server.
Fixed a couple of cases where viable backstabs would fail.

A required update for Killing Floor has been released for both Windows
and Linux dedicated servers. All dedicated servers must be updated to be
compatible with the client version now on Steam (and to show in the
server browser). This update includes the following fixes and
improvements.

Changelist:

Fixes
- Fixed a common crash involving Sprite Emitters, generally caused by
using a Flame Thrower and/or multiple Grenades.
- Fixed players with Level 5 Perks not always getting their default
weapon when they spawn.
- Fixed Clots not grabbing players that do not have the Commando Perk
selected.
- Fixed servers with a maximum of more than 6 players allowing Perks to
progress.
- Limited the number of respawns to once per wave to stop exploiters
from getting extra money and guns by suiciding.
- Fixed more exploits in KF-Manor, KF-BioticsLab, and KF-WestLondon.

Additions
- Added settings for the Voice Message system to allow players to
control the amount of messages played.
- Added a Friends tab to the Multiplayer menu which allows players to
quickly see which servers their Steam Friends are playing on.
- Improved usability of filter system by moving it directly into the
Internet Server Browser area.