Well, since Gal Civ III is going 64bit..uh....

[Larsenex]

Is there (any) hope at all of our game going to 64 bit?

Our game being the Civ series?

Over there at that other forum, they have mentioned that many ideas were 'borrowed' from Civ series, hex tiles for one.

If an independent game designer can do it, surely a behemoth like Firaxis with billions in petty cash can design a Civ game in 64 bit!

Ok so I uh, get that is really really hard to do. Just wishing...

 

[Derpy Hooves]

I have little doubt this will be the case for Civ6, god knows Civ5 is slow lategame on big maps already, kind of confused why there would be some sort of hype around this, it's a nice increase in performance for a lot of PC's, but not all that much.
The only reason they probably didn't do it for Civ5 is that most people still used 32bit when vanilla was released, and it's a lot of extra work to make a 64 bit version as well.