A limited external beta for Valve's new Linux version of Steam will begin in October, the company reported. 1,000 users will test the client, along with "one Valve game," likely Left 4 Dead 2
. The beta supports Ubuntu 12.04 and above. It's intended for experienced Linuxians: "For those new to Linux, we recommend waiting for a subsequent release where more features are implemented along with improvements to the user install experience."
The new Linux client will not include Big Picture Mode
, which just went into beta on PC and is "coming soon" on Mac.