The official World of Warcraft blog goes into more detail. If you'd like to see the full contents of the board game before you make your purchase, check out Joystiq's unboxing image gallery.
While WoW Monopoly is a new addition to the Blizzard store, it has been available at retailers since May 18, 2012. Note that your Battle.net Balance (where Diablo III Real-Money Auction House proceeds go) cannot be used to purchase anything at the Blizzard Store at this time. But if you've been waiting to buy the World of Warcraft Monopoly Collector's Edition direct from Blizzard, now is your chance.