The Los Angeles Times is carrying a first glimpse of the north end of the Rivers Of America with a long railroad trestle running along the river with a waterfall in the background. While it certainly will make a much more interesting ride, it will be a slightly shorter route. It will be interesting to see the speed of trains along this stretch. Most passengers were not aware of this, but the engineers got to achieve max speed on the DRR on this stretch.
I am still holding out hope Disney takes the opportunity to update the Grand Canyon/Primeval World diorama.