"PlayStation 3 is really just hitting its stride," said Tretton. "And technologically, I don't think it's possible to provide any advancement beyond what we have. What we've seen from the competition is trying to add features that already exist in PlayStation 3. We invested heavily in that, we rolled a very heavy rock up a steep hill, through the launch period. But now I think that all pays off, and we've got a long run way behind it. So, I wouldn't look for any discussion of a next-generation PlayStation for quite some time."