Although this reference is to physical blu-rays, since most now come with digital copies I assume that movies so released would eventually be available just digitally.
https://www.soundandvision.com/content/sony-what-movies-do-you-want-see-4k-blu-ray
https://www.soundandvision.com/content/sony-what-movies-do-you-want-see-4k-blu-ray