We are making progress with the 2d and 3d panoramic projection.
view 2D photosphere on google+
Download the “Omnidirectional Stereo” (stereo VR sphere) for usage with e.g. vrPlayer like mentioned at: www.blenderartists.org/forum/showthread.php?361867-PERFECT-VR-TESTCARD-done-with-blender-and-a-short-tip-how-to-do-it
Please also have a look at today’s great article from dalai on spherical stereoscopic panoramas: http://code.blender.org/index.php/2015/03/1451/