The screenshots are almost always pre rendered. So maybe it'll actually look like a Vita game. (Like DOA5+)
Or these screenshots may suggest dlc for the PS4 version.
Either way I am not holding my breath.
Well, if it's DLC for the PS4 version, that's actually good news, ESPECIALLY considering the implication that Misaki may be DLC, and it's less her being DLC as much as her opening the door for Tina, Mila, Lisa, Christie, Rachel, and Leifang being DLC as well.