Details are currently few as to when and where the "The Dark Knight Marathon" will occur but, as was the case with Marvel's The Avengers, the screenings will likely begin the evening of the 19th with Batman Begins, follow with The Dark Knight and end with the midnight premiere of The Dark Knight Rises.
Tickets are planned to go on sale on June 11th at AMC's official site, which you can access by clicking the banner below: