Blizzard announced the biggest World of Warcraft tournament in history today. You can sign up with a 3v3 team and play in qualifying regional tournaments in April which will lead to the main event. You don't play with your normal characters, but instead create level 70s instantly on the tournament realm and are given epic gear of your choice. This means it will be a purely skill based competition without any focus on "regular adventuring."

Here is the offical word on the event from their announcement:

"The tournaments are scheduled to start in April with two rounds of online qualifiers in Europe, South Korea, North America, and the regions of Taiwan, Hong Kong, and Macau. Each qualifier round will have a per-competitor entry fee -- €15/£12 in Europe; 20,000 won in South Korea; $20 in North America; and NT$450 in the regions of Taiwan, Hong Kong, and Macau -- and will run for six weeks. During this time, teams will play 3-vs.-3 matches on the tournament realm in their region, with the top four teams from each round advancing to the regional finals to compete for more than $27,000 in cash prizes. Winners from each regional will then be invited to a global championship event to compete for $120,000 in cash prizes, including a $75,000 grand prize."