Pretty sure it only released on PS3 outside of Japan. Was reading up on it and apparently the different console versions are actually different games
We got it on both systems. In Japan, the game was released as Nier Gestalt for the Xbox 360, while an alternate version entitled Nier Replicant was released for PlayStation 3 with a younger main character. Both systems got Gestalt in other regions.
I'm surprised they haven't announced a remaster since Automata was so successful ---