I have a theory that is quite different than others. I think that there will be a Kingdom Hearts game on all three consoles but not all will have Kingdom hearts 3. As of now we have had a Kingdom Hearts game surface on the PS2, GBA, DS, PSP, Cell phones. Note also before Kingdom Hearts 2 was released we got KH:Chain of Memories(KH 1.5). While I've never played it, I know the story and judging by the DS and PSP iterations Nomura would not want a gap between KH2 and KH3 to be unfilled. Thats where the Wii shows up. Perhaps the Wii gets a Mickey centric game where we see the events fold through his eyes using the Wii mote. Note it will require less time to create and could be used as a test to see whether it sells on the Wii. (But with Epic Mickey being released earlier and looking similar to the KH series we might find out earlier than later).
This leaves the KH3 which will be released on the PS3 and 360 with the PS3 having exclusive rights in Japan.
