Relevant Posts:
http://larian.com/forums/ubbthreads.php?ubb=showflat&Number=585252#Post585252
http://larian.com/forums/ubbthreads.php?ubb=showflat&Number=584942#Post584942

I really want to believe that it will be ported to Mac, but everytime I've enquired Larian about this their reply always dodge the issue, "We are focusing on windows, other plataform versions MAY be announced in the future". So I'm just telling you what I was replied by Larian.

I'm going to be honest though, while I don't mind waiting, I'm going to get a bit annoyed if it doesn't happen. But at this point I understand and I think its totally reasonable for Larian to focus on the Windows version.