Rumour: KH3 to be announced at TGS and be Exclusive to PS3

"According to the October issue of the Official PlayStation Magazine, it's rumored that Square Enix will not only reveal Kingdom Hearts III at the Tokyo Game Show, but announce the title as a PlayStation 3 exclusive" - PSU.com

Also rumoured for the Tokyo Game Show is reveal of Naughty Dog's next game, and possibly Team Ico's game