You mean like 64 bit OS?  I'm playing the beta on Vista 64 so the magic 8ball says your chances are good

sorry to be a party-pooper, but i think it's rather unlikely to get an x64 compile.

see, both DG and SupCom use the Moho Engine; something that runs heavily off Lua scripting. making an x64 version will have very very little effect on performance unless GPG decides to write their own x64 Lua interpreter (or one already exists).

The arenas in Demigod are far smaller than the maps of Supreme Commander. It's a very different game. 

Then you're barking up the wrong tree.  This game isn't about thousands of units battling it out.