crimsonheadGCN
Banned
Thanks Andrex for supplying the screenshots.
Official Press Release:
http://store.steampowered.com/news/9943/
Team Fortress 2 Item and Note:
Ubuntu:

Sales Page:

Latest Steam update:
Official Press Release:
http://store.steampowered.com/news/9943/
Feb 14, 2013–Valve, creators of best-selling game franchises (such as Counter-Strike and Team Fortress) and leading technologies (such as Steam and Source), today announced the release of its Steam for Linux client. In celebration of the release, over 50 Linux titles are now 50-75% off until Wednesday, February 21st at 10 AM PST.
The Steam client is now available to download for free from the Ubuntu Software Center. Ubuntu is the most popular distribution of Linux used by millions of people globally and known for its well-designed, easy-to-use customer experience.
“The introduction of Steam to Ubuntu demonstrates growing demand for open systems from gamers and game developers,” said David Pitkin, Director of Consumer Applications at Canonical. “We expect a growing number of game developers to include Ubuntu among their target platforms. We’re looking forward to seeing AAA games developed with Ubuntu in mind as part of a multi-platform day and date release on Steam.”
“We’re huge fans of Linux. It’s like the indie OS–a perfect home for our indie game,” said Alen Ladavac, CTO of Croteam, creator of the Serious Sam franchise of games. “And who better to lead the charge into Linux gaming than Valve? With Steam distribution on Windows, Mac OS, and now Linux, plus the buy-once, play-anywhere promise of Steam Play, our games are available to everyone, regardless what type of computer they’re running. That’s huge.”
Team Fortress 2, the Free to Play game, is also now available on Steam for Linux. For a limited time, Steam users who play the game on Linux will automatically receive a free, exclusive in-game item: Tux, the Linux mascot, can be carried by any of the game’s classes and traded between players. Additional Valve titles available on Steam for Linux include Half-Life, Counter-Strike 1.6, and Counter-Strike: Source.
In addition to games, the Steam for Linux client includes Big Picture, the new mode of Steam designed for use with a TV and game controller. With Steam for Linux and Big Picture mode, Valve anticipates a growing number of gamers will use Steam in the living room.
Steam is a leading platform for the delivery and management of PC and Mac games with over 50 million accounts around the world and over 2,000 titles offered. More details regarding Steam for Linux, including community discussion, official announcements and syndicated news can all be tracked on the Steam for Linux Community Hub at http://steamcommunity.com/linux.
Team Fortress 2 Item and Note:
You won't get your Penguin in TF2 until later tonight, it hasn't been patched in yet

Ubuntu:

Sales Page:

Latest Steam update:
Features
- Added support for Linux
- Offline messaging: You can now send messages to users who are offline. They will receive the message when they next log in
- Opening a chat dialog with a friend will show some recent chat history
- A web chat interface is available, you can find it by navigating to the Steam Community Friend Activity page in your web browser
- Added a caps lock warning indicator to the login dialog password textbox
- Added support for better content sharing between games
- Improved performance and responsiveness of client UI
- Improved startup time for users with large screenshot folders
- Prevent users from selecting an invalid screenshots folder
- Suspend all downloads automatically when a game is launched
- Added third party Mod support for games on new content system
- Big Picture: Users can now add wallet funds and authorize microtransactions
- Big Picture: In-game overlay now moves back on ESC when appropriate rather than closing directly
- Added the date that SteamGuard was enabled in the settings dialog
- Improved handling of international characters
Fixes
- Fixed several issues with scroll bars in the store and community views
- Fixed forum links opening in external browser windows
- Reduced retail install time when reading from optical disc on Windows XP/Vista
- Removed "/me" chat command, which allowed some users to modify the color of their chat text
- Fixed crash on startup caused by corrupt ClientRegistry.blob file
- Fixed a top crash related to video streaming
- Fixed an issue with cascading menu items
- Fixed issue where some game installers cannot write to the registry
- Fixed screenshots sometimes not showing up in screenshot manager when copied from another Steam installation
- Big Picture: Fixed left/right navigation of game related sections in the in-game overlay
- Big Picture: Fixed default font used by the in-game overlay
- Fixed launching 64-bit games and applications
- When a friend's status changes multiple times consecutively, only the last change will be shown (ie "Friend is now Online", "Friend is now Away" messages)
- Fixed Windows error message "Disk not ready" in game install wizard
- Made the preview image for guides smaller in the overlay
- Caching guide preview images when viewed in the overlay
- Added Ctrl+A select-all for system info text
Mac
- Greatly reduced CPU usage and power consumption
- Fixed command-W and other keyboard shortcuts
- Fixed bugs with window management and the Window menu
- Fixed leaks which caused memory usage to increase over time
- Added partial support for Retina displays
- Fixed bug with tooltips showing through Windows
- Notification popups now respond on the first click
- Web page views no longer freeze up after clicking and dragging the mouse
- Clicking the dock icon now brings all Steam windows to the front