Yes, Virginia, there is a Steam on Linux. And yes, this story is old news. The Steam beta on Linux has been going on for a couple of weeks now, but the important news is that I have received my invite. Behold! the obligatory screenshot:
Steam’s new “Big Picture” mode also works in Linux. It’s pretty awesome, and it detected my Xbox 360 controller without a hitch.
Right now, there are only a handful of games available, including Serious Sam 3: BFE and Team Fortress 2, but hopefully, that will improve over time. If you use the same account you have for Windows, it will show your Windows games, but will not give you a “Play” button. Like the Windows version, you can also add your non-Steam games to the client for easy launching.