I logged in to check, and indeed, Murkablo is already here! If you've ordered the stream, your character's next trip to a mailbox should yield your own personal fire-breathing menace.
Thanks to Jeff and A Pence for the tip!
Turn to WoW Insider for all your BlizzCon 2011 news and information. Get ready to kick off the weekend with the WoW Insider Reader Meetup, cohosted by Wowhead and Gamebreaker.tv, and look for our liveblogs of the convention panels, interviews with WoW celebrities -- and of course, lots of pictures of people in costumes. It's all here at WoW Insider!