Yea, I've already come to terms with the fact that my computer can't run it. Humbug. But I liked the fact that it's a single player game for the first 20 levels, then you go multiplayer. It just seems novel to me.
I'm a Mac owner and would love to see a version of Conan for it but I've got to admit that it's unlikely.
Go to http://forums.ageofconan.com and do a search for Apple or Mac and you'll see people discussing the issue. There doesn't appear to be an official "no" but there doesn't seem to be any mention of it by the developers.