Comic Book Resources reports on a variant cover for Aquaman: Sword of Atlantis #40, art by Ian Churchill.
I'd just like to say right here that I really hate variant covers, and I feel like a complete and total putz for falling for it, but I HAVE to have this cover. I hope my retailer can score me a copy.
According to the article, retailers can order one copy of the variant for every ten copies of the regular book they've ordered. The order code for the variant is DEC05 8016. The order code for the regular edition is JAN06 0302.