Brainslug on 19 June 2008
Someone correct me if I'm wrong, but I believe that what was alluded to at the end of KH2 was the Kingdom Hearts for PSP - A prequel that takes place 10 years before the original Kingdom Hearts.
Wikipedia says: (About Kingdom Hearts: Birth by Sleep PSP)
"The story was speculated early on to be connected to the unlockable trailers at the end of Kingdom Hearts II and Kingdom Hearts II Final Mix.[9] Nomura has since confirmed a connection to the trailers"
