Big Picture mode would launch "soon." Big Picture mode, first announced in early 2011, will allow gamers to hook up their PC or Mac to their living room television – well, okay, it doesn't have to be in your living room, just wherever you've got a TV. Valve aims to offer "simple, easy-to-read navigation designed specifically for TV" and controller support with Big Picture mode.
Tonight's episode of GTTV isn't available online yet (it's still technically on Spike TV on the east coast, if you want to catch the last few minutes) so we're going off host Geoff Keighley's Twitter account right now. We'll be sure to update as more information is made available. In the meanwhile, go grab a rag and dust off that moldy old television set!