If there is going to be a FFXIII-3 it would be on the PS3/360. I highly doubt they are going to give some spin-off sequel that kind of budget. If you are concern then you should be hoping he isn't working on FFXV.
"Know thy self, know thy enemy. A thousand battles, a thousand victories."
I think it would be total BS if the sequel to this came out on a new console. I don't have enough time as it is to play because of work and the gym and on top of that I gotta dish out $$ for a new console that might not even have the games I want. Like with the PS3, I bought it hoping id get a lot of rpgs/jrpgs but aside from 13-2, its nothing more than a blueray player/netflix player. I'm sorry but Wii is that last system I'll buy specifically for a particular game (xenoblade/ The last story). Also they started it on a PS# they should finish it in a PS3, just saying.