Well I have been thinking about this, the September release date just really doesn't make sense
I see it as very unlikely that Sony and M$ would have their consoles come out then, so if it is a next gen game, then it would only be for 1 of them first and then only in 1 region probably, as they certainly won't be able to do global launches in September
I think the most likely reality is a PS360 simultaneous release in September, with PC and next-gen ports coming down the road. I shall be buying the PS3 version at launch, then the PC (in a steam sale) and PS4 versions later