The upgrade is part of The Dark Knight Trilogy package that Warner Bros. has partnered up with AMC Theaters for (tickets went on sale yesterday). The trilogy will screen at 296 AMC locations in the U.S., 76 of them now upgrading to a fully-stocked IMAX experience for all three films. The move isn't an entirely shocking one. WB put on a similar event for the seven films in the "Harry Potter" series last summer just as the billion-dollar franchise was concluding, only that marathon wasn't presented in either 3D or IMAX (though the entire series being upgraded to 3D and re-running in theaters one day can't be that far off).
While not entirely shot in IMAX, "The Dark Knight" was screened in approximately 94 IMAX theaters in North America when it first hit theaters in 2008 and "Batman Begins" is getting a full digital upgrade to work in the 70mm film format. A 3D upgrade for the entire series (to juice those ticket prices) is surely a presentation that suits in WB board meetings would have loved, but Nolan has never made his preference for IMAX a secret. The visually-particular director is well-known for resisting the 3D format -- he refused to shoot "The Dark Knight Rises" in the stereoscopic format as it would have been incongruous with the rest of the franchise -- and any WB 3D idea probably didn't even get past the proposal stage. [Variety]