G.U. stands for Grow Up? Has that been confirmed?

I remember in the E3 trailer, I managed to catch two different phrases in the background. One was "Guilty Universe" and the other one I can't remember fully, but it was "Genesis ... " something, I believe.

Either way, G.U. looks great so far. But then, all we've seen are cutscenes, so I guess that doesn't mean much. I also like Kite's new design, even if he's corrupt data, or whatever.