Ben Kuchera(Polygon) :
"The SteamVR beta makes it appear as if you're in a generic environment looking at Steam running in Big Picture mode. That's it.
It's also another data point that suggests 2014 could be a big year for virtual reality. Developers have put out games and demos that operate in virtual reality since the release of the Oculus Rift development kit, but there are few tools available to launch each game without taking off the headset and interacting with a standard screen. User interface, the place you spend your time between games, is an unsolved problem."