Metzen might have spilled the beans on what we can expect from BlizzCon this year, including some big revelations about the Horde and Thrall's place in it. Around the 51-minute mark of the panel, Metzen muses about how awesome it has been, growing the Warcraft story from its simple beginnings as an RTS and getting to flesh out the world. At one point, Metzen says, "One day, come on, your Warchief is coming back. Right? There's more with Thrall," and emphatically mentions BlizzCon, indicating Blizzard has much to announce on the subject.