Yay, seems like the Steam Client, the Steam Engine and the Steam Games are comming to Linux, now for real.
There is no official announcement by Valve, yet.
But there are Linux binaries and a Linux launcher script on the valve servers publically available.
The Mac version, which is related to the Linux version (with regard to porting it to OpenGL, Webkit, etc…) and officially announced, is in a closed Beta at the moment.
So we may see the Linux version after the Mac version is in it’s final state.
Phoronix suspects a Linux version release in June.
Check out these articles at Phoronix: