Amid all of the news of J.J. Abrams helming Episode IV, the 3-D conversions were postponed.
Star Wars Episode III: Revenge of The Sith 3D
Star Wars Episode III: Revenge of The Sith 3D after being re-scheduled for one week earlier on October 4th 2013 was cancelled completely in mid-January.
Star Wars Episode II: Attack Of The Clones:
Episode II reached the same fate as Episode III.