It's being shot in 3D to begin with, not processed in "post". One of the cameras, which shoots very-HD 3D video rather than film, can be seen about 20 seconds into
this little video PJ released at the beginning of principal photography last month.
If PJ is doing it, I have faith in him that he’ll do it right. Maybe even develop some revolutionary technology, which he’s done before. If he doesn’t do it personally, at least he will hire the best brains to bring his ideas to completion.