No cinema 3D system needs dedicated distribution versions. They are all processed/corrected on-the-fly in the server/projector. AVATAR did not have 22 different distribution versions. At a time, Cameron considered different grades for different screen brightness, but FOX brought him to reason. The different aspect ratios and 2D/3D was more than enough for an industry that normally prefers single inventory distribution. Counting in IMAX and 2D versions, it actually wasn't special compared to other major releases.