Valve announced today that the SteamVR Desktop Theater Mode is now in an early beta phase. They say that this will be "showcased at next week's Game Developer Conference in San Francisco."

What is Desktop Theater Mode? It's a mode that allows VR users to play non-VR games with their VR hardware still on. It doesn't magically turn your non-VR ready games into 3D experiences. It instead probably projects a flat virtual screen or monitor that you can view as if it were a real world screen or monitor in front of you.