UOldPirate informs us that there is a possible LEGO Atlantis set scheduled for 2pm PST on Amazon’s Lightning Deal page. The teaser text simply says “We found Atlantis!” and is found in the Toys & Games section.
Gold box and Lightning deals tend to sell out in seconds, so grab one if and while you can. Good luck!
Update: zaskar from our forums informs us that it is indeed a LEGO Atlantis set. How? Through magic and trickery of course!