They’ve got the big screen,
now give them the big picture.
It’s time to come out of the den and explore a few more rooms of the house.
Heading to the living room—or anywhere there’s a big screen—is Steam’s soon-to-be-released big-picture mode, offering simple, easy-to-read navigation designed specifically for TV. With full controller support, big-picture mode will let gamers kick back and enjoy their favorite games on the biggest screen in the house.
Steam’s big-picture mode doesn’t require any additional development from you. Just ensure your game works well with a controller, and we’ll take care of the rest. And don’t worry, keyboard and mouse aren’t going anywhere—users will be able to switch between input devices at any time.
http://steampowered.com/steamworks/thebigpicture.php
My guess is that your computer will do all the rendering then forward the content over wifi or internet to your TV. But knowing Valve they can be full of surprises
Will be pretty cool though, means I can sit downstairs and the whole family can join in the fun of killing terrorist in MW3









