Sony has an HMZ-T2 prototype that they're calling the "Prototype-SR". They mounted a gyro and a camera onto the HMZ-T2 for head tracking and video pass-through for augmented reality. They're going to be demoing the prototype to a limited audience at the Tokyo Game Show at the end of September. Although I would love if Sony were working on an interactive HMD for gaming, it doesn't seem like this is the one!
http://www.roadtovr.com/2012/09/12/sony-to-show-off-hmz-t2-hmd-prototype-with-head-tracking-and-pass-through-ar-video-1188
http://www.roadtovr.com/2012/09/12/sony-to-show-off-hmz-t2-hmd-prototype-with-head-tracking-and-pass-through-ar-video-1188
