Trophies for what appears to be the remaster than no-one ever asked for, Prototype II, have been listed by Exophase, who usually have a good track record for this sort of thing.
Activision have not mentioned a remaster for PlayStation 4 and developers Radical Entertainment no longer exist, having been shut down by Activision following poor sales of, uhm, Prototype II. If Activision are to join the remaster market then 2012’s Prototype II seems a very odd place to start, surely a remaster of the original Call of Duty: Modern Warfare would be a better choice?
Perhaps they are still trying to make the series profitable, Square Enix’s Tomb Raider reboot only started making money once the PS4 and Xbox One Definitive Editions were on sale. Prototype II did have a PC version so it shouldn’t be too hard to squish that in to the PC-like architecture of the PS4 and Xbox One.