`Superman Returns': First live-action Hollywood release in IMAX 3-D
IMAX is using its "proprietary" 2-D to 3-D conversion process with the movie, not the "Dimensionalization" process that In-Three has demonstrated. (Seems like there's a lawsuit pending between the two companies over patents. Here's a timeline of the legal dust-up.
The IMAX Web site doesn't yet include anything about `Superman' in 3-D.
Also: CNN Money notes that IMAX is for sale, and that two of the possible buyers are Time Warner and Sony.