The first round of Beta Invites went out a few hours ago, wondering if anyone else here got one?
I've tried it a little bit so far and seems to run great. Had a bit of lag with Bioshock Infinite during menus but I think that was because steam was downloading games in the background, switched that off and running fine otherwise.
Need to hook a controller up to my Laptop and try it properly but so far seems pretty damn good. Just need to be logged into Steam on both computers and it'll automatically detect them. Then you get the option of all games installed on one PC or all locally installed games. Takes just as long to load games as it would on the main PC.