It seems that 5pb. is going to keep their Phantom Breaker train rolling as it has been announced that they are currently working on bringing the spin-off to their fighting game, Battle Grounds, to the PlayStation 4 as Phantom Breaker: Battle Grounds Overdrive.
Details are scarce about the game at the moment but it will be an upgraded version of the original game, the review of which can be found here, though no information about what these upgrades will be have been revealed. It will be a downloadable title with online and offline co-op and at the moment, no release date has been announced.