If you'd prefer to participate in the battles themselves, note that there will be a few changes to the tourney from years past. To start, Alliance Tournament XI will run over only three weekends, not four. Second, qualifying rounds and group stages have been replaced by double elimination from the get go. Next, from the second weekend onward, two ship types will be banned from the match by team captains. And finally, to fly with an alliance you had to have been a member since downtime this morning. Dev blogs covering all the rules, the broadcast schedule, and sign-up details will be coming soon.
[Update: CCP has been busy today! The official site has now also been updated with a dev blog announcing that dual character training will ship with the Odyssey expansion next month.]