Granted its been 2 years or so since I last rode it...so some of these may have already been there...
But new to us was a couple of new pre-ride videos - at least 2 in addition to the original.
There were a couple new projections on the ceiling that I dont remember seeing before and smoke coming from a snake head while you cross the bridge. Again, they might have been there before but I dont remember them.
Also the boulder wasnt working on our trip. We will see if it does tomorrow, our last day before flying back to Seattle :-(