Updates to Left 4 Dead have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Left 4 Dead
Fixed achievements getting awarded incorrectly if you had previously played on a PC (Mac only)
Get the full article at store.steampowered.com

Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Team Fortress 2
Fixed a minor issue with the Horseless Headless Horsemann
Get the full article at store.steampowered.com

Shaun McInnis joins David Vonderhaar at Treyarch to learn the ins and outs of multiplayer in Call of Duty: Black Ops.
Get the full article at GameSpot.com

Check out the launch trailer for one of the most anticipated games of 2010!
Get the full article at GameSpot.com

Updates to Counter-Strike: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Counter-Strike: Source
Fixed performance issues and memory leaks related to scoreboard display.
Fixed long-standing bug in which a player would see another player in a grenade-throwing animation when they no longer had a grenade as their active weapon.
Fixed animation problem (“crab walk”) caused by aborting bomb plant by using... [read more]

Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Team Fortress 2
Fixed players who are spectating teammates being able to collect the Haunted Halloween Gift in Mann Manor
Updated the localization files
Get the full article at store.steampowered.com

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Left 4 Dead 2
New Mutation: Bleed Out Versus
Tank speed is no longer reduced when on fire
Fixed team votes passing without a majority from both teams Fixed a bug where the add-on list could become unresponsive to mouse input Protected against some console commands that could be used to lag or crash servers
Get the full article at store.steampowe... [read more]

Left 4 Dead (PC)Like a little zombie garden for your OSX.
Get the full article at ign.com

Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Engine (CS:S, DoD:S, TF2, HL2:DM)
Fixed a dedicated server crash when HLTV disconnects
Fixed a crash in the materialsystem

Team Fortress 2
Fixed a bug with the Horseless Headless Horsemann falling through playerclip ladders
Fixed a bug with grenades sometimes exploding on friendly players
Fixed the Sticky Jumper doing damage to enemies
Fixed s... [read more]

Once again our Development Team has responded to your call for action. Based on your assistance by offering suggestions and constructive criticisms, the America's Army team has added dozens of improvements and tweaks to America's Army 3.

This release will feature a myriad of gameplay, UI, weapon fixes and more, all designed to greatly improve performance and your gaming experience. Plus, we've heard rumors about some undocumented changes, but we'll let our Developers tell you all about that, s... [read more]