The promotional video above has all the juicy details, so check it out to get a deeper understanding of the contest. I'm pretty excited to see what the entries are like; you've got to love a contest the encourages creativity in the community.
Also, they should choose Alliance.
It's open warfare between Alliance and Horde in Mists of Pandaria, World of Warcraft's next expansion. Jump into five new levels with new talents and class mechanics, try the new monk class, and create a pandaren character to ally with either Horde or Alliance. Look for expansion basics in our Mists FAQ, or dig into our spring press event coverage for more details!