Hello

I know this is a bit early to ask but would anyone know what the system requirements would be (for mac)?

Thanks

I have a mac, too. Considering that it is 3d and the graphics look great; probably:
G3+
maybe 1.2Ghz
anywhere from 1Gb-2.5Gb
3d graphics card

I seriously doubt it'll come out on the Mac at all. The Gamebryo graphics engine that they use doesn't currently support the Mac. Firaxis would likely be in legal trouble making a Gamebryo-alike due to the licensing agreements involved.