The official Pokémon website has announced that the first official online Wi-Fi competition will take place from October 12th to October 19th, 2011 via the Global Battle Union. Like the Japan Cup (ジャパンカップ) Wi-Fi tournament, the 2011 Autumn Friendly Wi-FI Competition will be limited to the first 10000 people who register. Below are the full details.

Press Release

Registration for the Global Battle Union Autumn Friendly Tournament begins October 12th.

Looking for a way to tune up your battling skills? Try a Wi-Fi Battle Competition! The 2011 Autumn Friendly Tournament is an easy way to play against other Trainers around the world. This competition is part of the Global Battle Union, one of the awesome features of the Pokémon Global Link. The tournament is completely free, so don’t miss your chance to show off your Trainer talent!

During the tournament, you’ll play against other Trainers online, using your Nintendo DS system and your Pokémon Black Version or Pokémon White Version game. The better you do, the higher you’ll rank. Then, at the end of the tournament, all the results will be posted to the leaderboards on the Global Battle Union website!

Here are some things you should know when preparing for the 2011 Autumn Friendly Tournament: All battles are Double Battles, meaning two Pokémon from each Trainer’s party will be battling at the same time. You need at least four Pokémon in your Battle Box before each battle, and you can have up to six. All of the Pokémon must be from the Unova Pokédex. Victini, Reshiram, Zekrom, and Kyurem cannot be used. When you battle, any Pokémon at Level 51 or higher will automatically become Level 50 for the duration of the battle. Pokémon at Level 49 or lower will not change level.

Registration for the 2011 Autumn Friendly Tournament will be October 12th to 19th via the Global Battle Union. Battles begin October 20th and run through the 24th. Be sure to register early—only the first 10,000 people will be given a place in tournament! To register, you need a Pokémon Trainer Club account and the ability to log in to the Pokémon Global Link. To battle, you need to have access to a wireless Internet connection.

Good luck and have fun in the Global Battle Union 2011 Autumn Friendly Tournament!

Source: http://www.pokemon.com/us/news/pgl_autumn_friendly-2011-10-06/