Allthough VITA name also suits SONY's latest portable device, it would suit next PlayStation product even better.
First letter is V which also can be read as fifth. Vita is indeed PlayStation's 5th big product.
But VI(6th)ta would be fine for PS4 if SONY were behind MS in naming.
I just do not understand why there is no commercial, where it starts from PS1 as I and go up to VITA with ITA slowly materializing after V.