Something I forgot to mention, but when I last went on the ride on May 8th, I think they silently added something that I definitely don't remember hearing on April 15.
When you're passing through predator cove and you're turning the corner towards the lift hill, The noise of rustling foliage and I think some stomping is audible to build up to the Indominus in the smashed wall.
I think it can be heard at 3:33 of this POV.
Also, I almost forgot about one other detail worth mentioning in this POV, but the ride stalls for a moment as the T-Rex appears, so you get to see a bit more of the Indominus' motion profile for when it happens.