If the remake was true, I highly doubt it'll be on anything but the PS3, since everything FF7 is out on sony platforms, apart from before crisis:

FF7 - PS1, PC
DC - PS2
CC - PSP

even advent children was sony pictures

PS3 is the only PlayStation without an FF7 title, so its likely it'll be on PS3, even if its not the remake, but if it is the remake, theres a chance it'll be on PC like the original, but I doubt that too...