NOT SO FAST!!! Mr. Hockings never said it wasn't possible. Here's the exact quote:
"There are methods that are called autostereoscopic where you don't require glasses, but these are limited in various ways. They only work for a typically single viewer, and they can only show a small amount of depth, so for very small screens they're OK."
"And you scale them up to a big screen; they don't work very well at all. There are no technologies at the moment to do glasses-free technology on TVs, and I don't think that's going to change for a while, actually, because any way you try and do it glasses-free on TV is incredibly complex,"
I don't know how you were given the false impression Sony said it was impossible... maybe cocaine?
EDIT: For fuck sake, look at the link!!!
http://www.neowin.net/news/sony-glasses-free-3d-playstation-3- ------------> not-for-a-while <-----------