The third chapter in the mash-up adventure of Square-Enix and Disney. NOTE: Although this project has been confirmed as being in production, the exact release plans have not yet been announced. The game has also not been announced for any specific platform (though good bets are on the PlayStation 3 system due to the series' history.) Please check back for official info.
~Ah, the wonderful sight of the fabled Apocalypse. Now appearing in Disney's Toontown!~
According to Tetsuya Nomura, the game isn't Kingdom Hearts 3. It's another sub-story, more like Chain of Memories, and is coming out to either DS or PSP (Though leaning towards DS in my opinion).
The game is apparently focusing not just on the knights, but Mickey's adventures in the World of Darkness and how he got his Keyblade. For the strong Mickey focus alone, I think this game is going to be freaking awesome.