After a buildup of rumors, Valve officially revealed the HTC Vive headset in March at GDC 2015, complete with the ‘Lighthouse’ positional tracking system that can track the headset and controllers in a ‘room-scale’ space of 15×15 feet. Prior to the reveal, Valve secretly met with select indie developers to create a suite of demos that were shown running on the SteamVR platform at GDC 2015.
On the form, Valve asks developers to specify the development company’s name, website, a description of their VR project, when that project is estimated to launch, how large the development team is, and standard contact information.
In addition to two Lighthouse base stations, the HTC Vive Developer Edition will include two SteamVR game controllers which are tracked by the same system. The controllers have sombrero-looking crowns which position the Lighthouse sensors to reduce occlusion by the hands.
See the full announcement here: http://www.roadtovr.com/htc-vive-developer-edition-signups-open-steamvr-free-selected-devs-not-for-sale/