Hah, called it!
Well, ok, only kind of. I said the game would be released for PS3.
I badly wanted this game.
http://blog.eu.playstation.com/2015/09/15/gravity-rush-2-and-gravity-rush-remastered-announced-for-ps4/?adbid=643756162437943296&adbpl=tw&adbpr=36969785&emcid=social_20150915_52463456