The Key Art is particularly interesting, for a few reasons. First of all, it's been released prior to the convention itself. In previous years the Key Art has been withheld because it was totally spoiler-riffic -- think BlizzCon 2011, where it featured a panda, and thus wasn't released until after the announcement of Mists of Pandaria. This year's art, however, features front-and-center one very angry-looking Garrosh Hellscream (or what we assume is Garrosh Hellscream). Considering the Diablo and Starcraft art portions both reference known upcoming releases: Diablo: Reaper of Souls, and Starcraft II: Legacy of the Void, I think it's safe to say that the Key Art confirms that WoW's next chapter will feature as BlizzCon's main attraction. But beyond that, we don't really know. It honestly raises more questions than it answers, and makes me even more intrigued to find out what Blizzard has next in store for World of Warcraft.