They want to focus on the new trilogy. Read more after the break..
Deadline learned of this decision just now from Lucasfilm‘s promotional partners who are telling them the studio now owned by Disney wants to focus only on “rebooting the franchise” with three new Star Wars films. This surprising decision follows the underwhelming box office performance of Episode I: The Phantom Menace re-released in 3D in February 2012. It debuted to only $23M domestically but maybe even more importantly hardcore fans felt it was yet another craven cash grab by George Lucas. Back in September 2010, Lucasfilm and then-distributor Fox announced that all 6 films in the Star Wars franchise would be converted to 3D. Episode II: Attack Of The Clones (first released on May 16, 2002) was to hit theaters in 3D on September 20th, 2013, while Episode III: Revenge Of The Sith (first released on May 19, 2005) was to play in 3D on October 11, 2013.UPDATE!
Lucasfilm's official statement:
Lucasfilm has decided to postpone this fall's scheduled release of Star Wars Episodes II and III in 3D. Given the recent development that we are moving forward with a new Star Wars trilogy, we will now focus 100 percent of our efforts on Star Wars: Episode VII in order to ensure the best possible experience for our fans. We will post further information about our 3D release plans at a later date.