GDC2016 is the largest game developer conference in the globe. By all accounts it will be the biggest yet for virtual reality. It has become so huge a sub-conference has been organized called the Virtual Reality Developers Conference (VRDC). It expands beyond games to help developers produce immersive entertainment of all kinds, from games to CG movies to filmed experiences to simulations.
Oculus Rift's consumer version (called CV1) is already available for pre-order and its hardware specs are well known. But we expect to see more announcements around the software platform and a great deal of buzz about entertainment titles available. We do not expect to see an announcement on availability of the new Oculus designed touch controllers. For now it ships with an Xbox controller.
Note, Samsung's GearVR is powered by Oculus software and will very likely be able to run VR software the CV1 does. Look for more on this this week too.
The Sony PlayStation VR is a console-based VR headset. So high end gamers will not need to invest in another PC to use the Sony VR. This is a huge plus. Release date will probably be Q2, maybe late June.
The HTC/Valve Vive is available for pre-order. They are focused for now on providing SteamVR games. If you are a hard core gamer, this may be the approach for you.
Overall, I believe if you are a home user the Sony VR path may be the best. Enterprise users will want to consider the Oculus path. Hard core gamers may want to leverage all these options.