This year there will be a Computer Poker Workshop at AAAI on Sunday July 14th chaired by Chris Archibald and Michael Johanson. They are currently soliciting submissions for both oral presentations and posters. For more information see these pages:
AAAI-13 will take place in Bellevue, Washington, USA.
The 2013 Annual Computer Poker Competition will be held again in 2013, during the month of June. Eric Jackson will be returning as one of the competition chairs, with Neil Burch replacing Jonathan Rubin as the second chair. As in previous years there will be heads-up (two player) limit, three player limit, and heads-up no-limit Texas Hold'em competitions. Rules can be found here.
The current, tentative plan is to use Amazon EC2 medium instances again this year, with a final submission deadline of June 2. Note that these machines are quite a bit less powerful than many desktop machines, so if computing resources are a significant issue for you, please check that this is adequate. It is possible to get access to a smaller testing instance through Amazon for free by creating an EC2 account, and all competitors will get access to a full sized competition machine for final testing at least one week prior to the final submission deadline.