The vanilla and Warlords version numbers are the same as they've been since BtS came out. It would be an easy change (DRM is not written by Firaxis but added by another program; they would have DRM-free version locally, most likely) especially since it was done for civ complete. It just never got in the patch for some reason (3.19 most likely has it because of complete; otherwise two patch versions would have been needed).
Guys, East Asian topics, not Christianity topics, although I would be more than happy to see posts on Plotinus' thread.