I found a very good PS4 Rumor site here.
Man... The GPU is crazy!!! According to their site, PS4 GPU is 1.843Tflops!
I want to use this as my supercomputer... Please Sony... Other OS option needed BAD! -stingraze
Update: 2/18/2013 There is a rumor that PS4 WILL have the Other OS option. I really hope it's true!