OK, the new cover(s) has been uploaded to CreateSpace. Oddly enough, I can't upload it here--look over there or just take my word that it's basically the same cover, except that the portal is larger, hopefully looming somewhat menacingly.

So I'll have to order proofs again and go through that whole rigmarole, which is fine, and then I'll have to convince Google Books and Amazon's Search Inside the Book feature to use the new cover, which will probably be kind of a pain. But THEN I'll really, REALLY be done!