For a time, accepting it's unreliability, Universal modified the Explorer to teeter precariously at the top of the wall, punctuated by a loud Tyrannosaurus roar. However, that didn't seem to work reliably either.
I'm excited to see what has been done to modernize this ride. I suspect the scene teased in the video is located in the section at the top of the initial small hill, leading the the former Jurassic Park gates. The section following the gates has apparently also been enclosed, which I imagine is to protect animatronics from the elements seeing as that was an issue for the ride. At least, that's my hope for the enclosure.