Xbox VR headset is already in the hands of developers

December 19, 2014 - Xbox One - Rumor
Source Says: Sources familiar with matter have informed TechRadar and VR Focus that the Xbox One headset prototypes are already in the hands of some developers, suggesting that the company is busily working to get software lined up.

While we have been given no explicit indication of time, a separate report from Digitimes claims Microsoft is planning to mass-produce the device in 2015.
Source: techradar.com