I don't know how they brightened the opening, because it was just as dark as ever, if not more so. I haven't ever been sure why Paramount funded a full restoration after the Lowry transfers were made, and then didn't do the same for Temple and Crusade. I have some faith in the restoration as it was the last done by Ron Smith before he was booted out of the studio's restoration department. (He also did the recent Ten Commandments, Breakfast at Tiffany's, African Queen) But it certainly to my eyes looked like someone had been messing with the contrast and image levels.

Prediction: The Blu-ray will be the 4K master converted down to 1080p with 5.1 audio in DTS-HDMA.

I think the audio may have simply been because it was digital off the print, and someone had not turned everything on...people have raved about the digital screening's sound, which would likely be a higher resolution file akin to what would be on the Blu-ray.