Play your Steam games on any TV in the house with Steam Link. Setup is easy. Just connect your Steam Link to your TV and home network, where it will automatically discover any computer running Steam. Then grab a controller and play your collection of games from the comfort of your couch.
So it looks like the Playstation TV (PS4 Remote Play) for Steam that runs games off your PC. Connect up a Steam Controller (or X360, keyboard/mouse, etc) and off you go. Available Nov 2015.
I couldn't find the videos that are on the Steam site on Youtube, but hit the links below and you'll see them. I was quite surprised at how cool the controller looks.
Seems pretty sweet, and a great solution to have instead of a dedicated HTPC running Big Picture and all that.
Steam still has a whole lot going for it with such a huge library and crazy accessibility, I think if this takes off it could take a chunk out of the console market.
PC Master Race may even migrate to the couch?
Steam Link: http://store.steampowered.com/app/353380/
Steam Controller: http://store.steampowered.com/app/353370/