While the PS3 and PS4 versions have cross platform online multiplayer like Guilty Gear Xrd: SIGN, the PlayStation Vita release won’t be able to utilize this feature. Also, online lobbies aren’t in the Vita version either.
Otherwise, it looks like the volume of content in BlazBlue: Chrono Phantasma Extend will be the same as the PS4, Xbox One, and PS3 versions. The Vita version, which will only be released as a PSN download will only cost 4,800 yen. Console versions are 5,800 yen digitally or 6,264 yen in stores. All versions of BlazBlue: Chrono Phantasma Extend are scheduled for April 2 in Japan.