http://forum.blu-ray.com/showpost.php?p=15373829&postcount=393
Found a comparison of the iTunes version to the IMAX version and it does seem that a lot of information is cropped from the sides. If the IMAX ratio is on the 3D Blu-ray, then we should have rips by next week.
The information missing from the side is standard for the 3D release versions. It has to do with aligning the two eyes. This missing information is why this Russian version is assumed to be the left eye of the 3D release.