Ok here you go:

"Kingdom Hearts: Birth By Sleep" is coming on PSP within the next year or so. This is NOT Kingdom Hearts 3, which so far is only slated on PS3 (however, with Final Fantasy 13 being on 360 and PS3, I'm hoping KH3 will too) The story is about the Keyblade War and the main 3 combatants, taking place before KH1.

"Kingdom Hearts: 358/2 Days" will be a DS only title. I believe this tells the story of Roxas during his time with Organization 13.

"Kingdom Hearts RE: Chain of Memories" is coming to PS2 in December. Its based on the Gameboy Advance card-based battle system. The story takes place between KH1 and KH2.

"Kingdom Hearts 3" is...of course...KH3. I actually dont know a whole lot about this one... O.o

Please correct me if I'm wrong about any of those but thats what I've heard for those of you who may not know! biggrin

Oh and by the way Roxas rocks!!!