I don't know. Cg is starting to become more popular, so that's a possibility. Actually, it might be both, with real people doing the humans, nightelves, etc., and cg's for the orcs and tauren, or something like that. Personally, I think it'd be cooler if the whole movie was cg. I don't know why, but movies based off of video games seem more effective when they are cg, like FF7AC.