The film was released on IMAX theaters on 1 November 2002. The reformatted IMAX version was approx. 20 minutes shorter than the theatrical release. These are some of the scenes that has been cut from the IMAX version:
A long scene in Palpatine's office involving Yoda and Amidala. Palpatine suggests Kenobi and Anikin as bodyguards.
Jar Jar greeting the Jedi pair as they enter Amidala's quarters.
Kenobi talking to the Jedi head librarian.
The hilltop scene on Naboo where Anakin rides a grazing animal and Amidala and Anakin talk about political science.
Mace Windu and Yoda discuss whether they should reveal that the Force is no longer as easy to use.
The scene in which Yoda says that while Anakin is somewhat arrogant, that is an increasingly common failing among Jedi.
Owen Lars greeting Anakin and Amidala at the farm.
The confrontation between Count Dooku and Kenobi is shorter.
Jar Jar being set up by Palpatine to get the Senate hand more power to him.
Part of the scene where Padme sees Anakin for the first time in 10 years. The cut goes directly from the elevator to ObiWan discussing security.
Part of the scene where Anakin and Padme leave Coruscant has been trimmed
The scene where Anakin and Padme meet with the Queen has been eliminated
Scenes with Anakin and Padme on Naboo have been trimmed, with the picnic scene eliminated completely.
When Obi Wan was captured and met with Dooku, after the line "I'll never join you" it cuts directly to the Senate floor without Dooku responding "It may be difficult to secure your release".
I'm sure there were little subtle edits as well, like a few frames here and there to shorten the length.