This is a batman Arkham game I would be shocked if they didn't make this multiplatform like the last titles have been.
It is multiplatform..................for next gens and the PC only. And the way that they're describing the game in terms of graphical design and the gameplay engine, it seems like it will only be build for the Next Gen consoles (PS4, Xbox One) and mid-to-high performance PCs.
So yeah, you either better think about upgrading that PC/laptop of yours OR upgrade your console up to the Next Gens if you truly desire to play this final Batman Arkham game