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?

[Via WOW Insider; thanks, Supa]