I think my girlfriend was one of those lucky bastards--according to her the Cine Capri in Phoenix ran triple features of the films occasionally, and that was a 70mm installation. It was too long ago to remember anything specific about different versions though. It's too bad that theatre isn't there anymore . . .

I doubt they made any new 70mm prints, let alone fitted them with updated audio mixes, if the re-release was of such short duration; they probably just loaned out some prints they had lying around that were still in decent shape.