1. NBC cancelled it two years too early.
5. The center ring in the Winner's Circle carpet was white, the red borders of the trilons on the big pyramid were wider (leaving much less of that empty blue space at the bottom), and the front of the desks, the part that forms a background for the clues, came down further. The ovalish space at the top of the pyramid, where the dollar amount was, was bigger (so $100,000 didn't look as squished as when it was in a space made to say $25,000). On both (I think) pyramids there's a thin yellow border both inside and outside the lights, where on the old one it was just on the outside. The clue-givers' screens were much shorter, little stuff like that. I wouldn't be surprised if a lot of it was the same set dug out from wherever it went, but then again the things that *are* changed seem both useless and difficult as ways of updating an existing set.
My favorite update, though, was the character they put at the end of the seventh word in each category. Nice touch.