Following its pre-announced series of announcements, Valve has revealed its line of living room hardware that will be more than happy to run on its previously announced Linux-based SteamOS. Although everyone expected the Steam Box, Valve has announced that we will actually see "several boxes to choose from, with an array of specifications, price and performance".
Scheduled to show up sometime next year, Valve did not shed any light on actual hardware, partners or even the expected high-performance prototype that they currently have, but rather noted that around 300 users will be chosen for a hardware beta test. A small number of users (30 or so) will be chosen directly on behalf of their past community contributions and beta participation while rest will be chosen randomly.
Those lucky enough to score the prototype for beta testing will be encouraged to share their impressions online but we are more interested in partners as well as hardware of Steam Machines.
Valve also launched the closed beta of its Family Sharing service, same one that allows users to share content across multiple devices.
You can check out more about how to apply for beta at Valve's Steam Machines site.