MMO-Champion reports that Blizzard has filed a new Trademark for "The Dark Below," speculating this might be an expansion for World of Warcraft or Diablo III, with one of their comments noting this seems to mesh with a comment they made about Gamescom suggesting this is clearly Diablo-related, while another notes that in World of Warcraft the boss Ozumat is the "Fiend of the Dark Below," suggesting this is clearly Warcraft related. The two oddities we will note is that our efforts to find this listing on the United States Patent and Trademark Office website were futile, as this is not one of the 89 Trademarks listed for Blizzard in that system (our search on a different system offered to let us buy the TM for $159.00). Also, what would seem to be an innocuous thread on this topic was deleted on the WoW forums, though a long thread remains. Thanks nin via Massively.