Alright, I took a chance and became a Beta Tester on my ATV4K unit in my main HT. The following titles I was able to sample in Dolby Atmos using my Vudu app on my ATV4K unit:
Black Panther
Star Wars: The Last Jedi
Pacific Rim: Uprising
Peter Rabbit
The Incredibles
Thor: Ragnorak
Coco
Black Panther
Star Wars: The Last Jedi
Pacific Rim: Uprising
Peter Rabbit
The Incredibles
Thor: Ragnorak
Coco