The most mind-blowing release of an old film back into cinemas in recent years...???
Answer... 1985's 'Back To The Future' in stunning Digital 2D for it's 25th Anniversary. The remastered picture quality was so sharp, you almost needed 3D glasses just to make the image all blurry and dark, so that your view wasn't obscurred by tears of joy.
If you release SW in crystal clear Digital/70mm film 2D, on today's big-ass screens with a thundering soundtrack who needs Stereoscopy?