He feels it is impossible to concentrate on two projects at the same time, so he wants to finish Final Fantasy Versus XIII first before moving on to the next game in the Kingdom Hearts series.
Poo.

In conclusion, Nomura also announced that Versus would be the last Final Fantasy he would be directing. He wishes to focus exclusively on the Kingdom Hearts franchise.
Ohh! <3<3<3

Kingdom Hearts is more important anyway. Haha, Mister Thirty-three Centimeters.