It's 2 gopros that are synced together so they start and stop with one click, but they are gen-locked so each frame starts at exactly the same time.  It'll have software available to put them together pretty easily - all the stuff about glasses and polarization all depends on your display, not the actual camera.  It will be able to generate something that can play on a 3D TV, red/blue, 3D projector, etc.