It would seem a little weird since there's all that Etro/crystal stuff in Versus, but I guess in the time which we've heard nothing they could have revamped the entire story. :/ I could see then just lopping off the XIII and calling it Versus or some other ridiculous title, just not becoming a main-numbered title. If it IS the case, then what's the new title they're doing for the PS4?
Honestly, I wonder if even Roen knows wtf is going on with the game after working on the clothing design in 2008 with little being released for Versus since 2011.