Blizzard Entertainment begun sending emails to all BlizzCon 2010 DirecTV and live stream subscribers — myself included. Check your email and grab the code. Go to your battle.net/login account page and redeem your Blizzcon 2010 Deathy Murloc Pet, Deathy the Murloc (World of Warcraft), Murlocalypse Now and Tidehunter Decals (Starcraft II: Wings of Liberty) and the Murloc Marine Starcraft II Avatar.
The Deathy Murloc pet will have its unique animations and sub-routines breathing out lava added in an upcoming patch. Currently, it shares the same animation of the previous murloc pet.