Source
We are beginning a special three-day sale of World of Warcraft on November 27 – 29, where the price of the original game will be only $5.00! Digital copies of the game, including an authentication key, will be available for purchase through our online store at this low rate as well. For more details on this special sale, please visit: http://us.blizzard.com/store/

It’s possible that in some locations copies of the game which were purchased during this sale could be returned and be resold at full normal price. These resold copies may have already been used which would result in an invalidated authentication key unable to be used to create a World of Warcraft account. While we will try to prevent these situations, we recommend you purchase the game through the official Blizzard Online Store, or by ensuring you’re only purchasing an unused copy from a reputable brick-and-mortar retail location.

Source
In our continuing celebration of World of Warcraft’s five-year anniversary, we’re in the mood to give away some fantastic prizes to a lucky selection of those following us on Twitter. Our offices are brimming with spare World of Warcraft loot codes and we feel it’s time to give back to those who have made this gaming community so great. Are you a pet collector who has yet to get your hands on a Robotic Homing Chicken, Baby Hippogryph, Ethereal Plunderer, or Baby Monkey pet? Have you ever wanted to cruise Northrend on an Area 51 Rocket, a Riding Turtle, Spectral Tiger, or Rooster mount? Well here’s your chance to win these and other extremely rare loot codes!

All you have to do is join the tens of thousands of people already following us at www.twitter.com/warcraft; and hey, if you’re already a follower, you may already have a chance to win. Between November 30 and December 11, 2009 we’ll be selecting random winners daily from our growing list of followers, so start following our feed today!

Official Warcraft Twitter: http://www.twitter.com/warcraft
Official contest rules coming soon

Source
The World of Warcraft Official Magazine should be coming hot off the presses in December. We hope to have them shipped out shortly thereafter. We'll be sending an email out to all subscribers in the near future with additional details.