SPOILER :

 

okay for everyone who has seen the ending to birth by sleep with Sora ,Kairi, and Riku .... I am really curius as to what the game is going to be about... I know it's going to be about sorry "reconnecting " everybody , but what about a main villion or somthing ?

 

any ideas?

I think that the main villain would probably a form of Xehanort, as all the main enemies in previous games were either Xehanort in some way, or Organization 13.

It is going to be about Sora as he tries to heal everybody that's connected to them and stop their suffering. These people are Terra, Aqua, Ven, Namine, Roxas, Axel, and Xion. This may or may not be KH3, but if it is KH3, the villain will almost definitely be Xehanort in some way, shape, or form.

maybe xehanort cause when you save terra xehanort is in him

Tetsuya Nomura has confirmed that Xehanort will return in future installments and that KH 3 will most likely feature his final battle against Sora.

Yeah, KH3 brings about the end of the Xehanort saga, so the villain will most likely be Xehanort.