Square Enix will release the PC version that is compatible with windows vista and 7 with a new installer, something like the Ultima Edition. They will probably change the ff7 config to add it as an option in game. Also the resolution will be increased from 640x480 to perhaps 1600x900. They will smooth out the field backgrounds and fmvs. Also fix the errors of the previous pc versions (vincent aerith death animation glitch, weapon fmv error, snowboard game frame rate). Also the file saves will be uploaded to a server so you don't have to worry about having your save files lost or corrupt. Music will be updated from midi to mp3.
My opinion is FFVII bootleg is better than this. So dont buy it when it comes out.
The same thing will happen for FF8 too.