Blizzard reveals Burning Crusade collector's edition

Blizzard has announced the contents of the Burning Crusade collector's edition. Including the game itself (on both CD and DVD), you also get:
An exclusive in-game pet, the netherwhelp. According to Blizzard, it is the offspring of the nether drake flying mount. Blizzard promises an image "in the near future."
The Burning Crusade CD soundtrack
"The Art of World of Warcraft: The Burning Crusade," a hardcover coffee table book.
A behind-the-scenes DVD featuring two hours of footage
Two starter packs for the WOW Trading Card Game and "three exclusive tournament-legal" cards (Leeroy Jenkings, perhaps?)
Map of Outland mouse pad
The original World of Warcraft collector's edition included a hardcover art book, behind-the-scenes DVD and in-game pet. If you have both collector's edition, can your avatar bring two pets along with them? Would they play with one another?