Not sure if this has already been pointed out but Ryan Davis from GiantBomb retweeted this about the PS4 being designed by Frank Gehry.
I couldn't find any info about this when searching but maybe my Google kungfu sucks.
Website for Frank Gehry
Anyways, Gehry is a famous architect who designed such projects as the Guggenheim Museum in Spain, Walt Disney Concert Hall in LA, and Experience Music Project in Seattle. He was also recently chosen to design Facebook's new HQ.
He also did some jewelry design work for Tiffany & Co.
He has also done a lot of sculptures.
Maybe these designs will help shed some light and also give us an idea of what concepts he might use in designing the console. I doubt this is new thread worthy since I couldn't verify the Gehry claim.