I have all the Alien movies except 4 and before I did that atv4k update the appropriate movies where 4K and w Atmos where applicable.
Now they show 4 k but with HDR10+
It is a headscratcher
And when I search for it in the iTunes Store within the 🍎 TV app on the at 4k I see this and deleted scenes but not the new featurette Or Atmos when I play it.