Re: the breakout box.
Dr. Richard Marks, head of the VR project, talked about what it does. Here's a thread about it.
http://www.neogaf.com/forum/showthread.php?t=1122142
Here's the breakdown of what he said.
He also, in that video, specifically says that the ps4 "doesn't have any secret sauce".
Yup, great video. The gaf thread about is linked at the top of this post.
The " no special sauce" refers to the splitting of the image being nothing special, not about the box not having any other function.
But we'll see
These slides specifically say otherwise, and I found Marks to be particularly coy in his answers. #shrug