Over the past day or two, a couple news sites have picked up on this story. Apparantely Tetsuya Nomura has said a bit too much, but like Joystiq says, its going to be difficult to tell without some more info from the translator. Then again, this is only still in the rumour realm I'd say...
But with the Kingdom Hearts: Dream Drop Distance TWEWY section (something I never expected in the first place), perhaps this could come true one day. I really don't see how they'd name the sequel if they did bring it out, then again, its Square Enix...recently the games have had some...interesting names.