Steam Blog - Valve
The Steam Wallet has officially been released along with the Team Fortress 2 Mann Co. Store, where players can now purchase items right within TF2.

With Steam Wallet, you can add value to your Steam account using any of the payment methods supported by Steam. Funds in your Steam Wallet may then be used to buy any item available in the Steam store on an in-game store. You can load up your Steam Wallet ahead of time, or wait until checkout. Also, different payment methods can be combined to make a single purchase.

Once you've added funds to your wallet, that money will be used by default for subsequent Steam store purchases. But if you'd prefer to reserve your wallet balance for in-game purchases of Mad Milk, Holy Mackerel and Bushwackas, no problem -- simply select another payment method during checkout. Your wallet funds will be there the next time you're ready to shop at Mann Co., or any other in-game store.

TF2's Mann Co. Store is the first of many upcoming Steamworks in-game stores where Steam Wallet funds can be spent. See the TF2 Mannconomy FAQ for any questions specific to that game. Otherwise, feel free to give the wallet a try for your next Steam purchase, and please let us know what you think.
Counter-Strike: Source - Valve
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
  • Added the Mann-conomy.
    • Added 65 new items (hats, weapons, tools, minigames, gifts, crates).
    • Added the Mann Co. Store & Catalog.
    • Added Trading.
    • Added Item customization.
  • Additional TF2 features
    • Added new auto-team-scramble system:
      • Set mp_scrambleteams_auto to 1 (default) to automatically scramble the teams if the criteria is met
      • Set mp_scrambleteams_auto_windifference to set the number of round wins a team must lead by in order to trigger an auto scramble (default is 2)
    • Updated how Spy disguise targets are selected to more randomly distribute the selections
    • Fixed the FreezePanel background not using the correct color if you were killed by a player or building on your own team
    • Server browser tweaks
      • It will now encourage you to add servers to Favorites or Blacklists after you have a good/bad experience on them.
      • The Server Browser now automatically closes after successfully connecting to a server (opt-out via the Options-Multiplayer->Advanced dialog)
  • Achievement tuning
    • Demoman achievement "The Stickening" changed to 3 from 5.
    • Heavy achievement "Krazy Ivan" changed to 50 from 100.
    • Medic achievement "Consultation" changed to 3 from 5.
    • Medic achievement "Peer Review" changed to 10 from 50.
    • Medic achievement "Placebo Effect" changed to 2 from from 5.
    • Medic achievement "FYI I am A Medic" changed to 1 from 5.
    • Medic achievement "Family Practice" changed to 5 from 10.
    • Soldier achievement "Geneva Contravention" changed to 3 from 5.
    • Scout achievement "Strike Zone" now counts assists.
    • Scout achievements "Fall Classic" and "Foul Territory" are fixed.

Engine (CS:S, DoD:S, TF2, HL2:DM)
  • Added sv_alltalk to the list of convars that are checked for the sv_tags list.
  • Fixed a model instance crash.
  • Removed engine ConVar "r_ForceRestore"

Other Games
  • Half-Life 2: Deathmatch
    • Updated to run on the Orange Box engine with CS:S, DoD:S, and TF2
Product Update - Valve
Updates to Rhythm Zone have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
  • Scoring bug fixed
  • Laggy Advanced Audio Engine gameplay fixed
  • Black screen crash occurrence reduced
  • File browsing bug fixed
The Settlers 7: Paths to a Kingdom - Valve
Updates to The Settlers 7 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Version 1.10

Improvements
  • Players will now be informed if a player is lagging behind when loading a multiplayer session
  • Players who are not responding for more that 45 seconds can now be kicked by vote

Bug Fixes
  • Fixed a rare freeze when conquering a sector owned by another player or AI
  • Fixed a non upgradeable tower on “Battle for Tanholm”
  • Fixed a bug with a non reachable sector on “Grassland Mesa”
  • Fixed a savegame issue on the 1st campaign map
  • Fixed a bug with the game´s connection to Facebook
  • Fixed a rare bug where the new victory points “Pacifist” and “Ascetic” were not awarded correctly
  • Fixed a rare crash with corrupt savegames
Haunted House™ (2010) - Valve
Dare to be scared! Haunted House is BACK! After 30 years, Atari's classic groundbreaking game is back with all-new scream-worthy chills and thrills! With spooky enemies lurking around every corner, are you brave enough to enter the Haunted House?

Borderlands Game of the Year - Valve
Updates to Borderlands have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
  • Adds DLC Support: Ensure Cross Compatibility between owners of ClapTrap’s New Robot Revolution content with those who do not own the New Revolution content.
  • Stops removing valid weapons and items: Some legitimately-obtained items and weapons were being inaccurately tagged as invalid or hacked, and were being deleted from players’ inventory. The patch ensures that only invalid weapons & items are deleted.

Cities XL Regular Edition - Valve
Now enjoy huge savings on the next-generation in city-building games. Cities XL and Cities XL: Limited Edition are each 75% off during our Midweek Madness sale! Offer ends Thursday at 4pm PDT.

Develop cities on realistic 3D maps using an incredible collection of unique structures.

Lara Croft and the Guardian of Light - Valve
Lara Croft and the Guardian of Light is now available on Steam.

Lara Croft and the Guardian of Light is an action/adventure game featuring Lara Croft. This brand extension combines the hallmarks of the Tomb Raider franchise including exploration & discovery, platforming, and puzzle solving combined with character progression, fun fast-paced combat, and elements of human cooperation and competition.

Mafia II (Classic) - Valve
Purchase the new DLC packs and add to your Mafia II experience with new cars and outfits! The following packs are now available: War Hero Pack, Renegade Pack, Vegas Pack and Greaser Pack. Click here for details on the new Mafia II content.

Supreme Commander 2: Infinite War Battle Pack - Valve
Get ready for some awesome new features and upgrades developed by Chris Taylor and the team at Gas Powered Games. The Infinite War Battle Pack DLC for SUPREME COMMANDER® 2 is now available on Steam, featuring a whole host of new maps, units, experimentals, tech tree upgrades, and boosts for PC!

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