[quote name='Scorch']Does this mean he won't score KH2 and other Final Fantasies??[/quote]
He didn't work on the original Kingdom Hearts (those honors go to Yoko Shimomura, also working freelance), and no, this doesn't rule out his involvement in any future games in the Final Fantasy franchise.
Uematsu is freelance now, meaning he can compose music for any publisher, and not just Square-Enix. It's not that big a deal, really, seeing as he can still work with Square-Enix any time he's contracted to do so.