https://arstechnica.com/gadgets/2020/10/disney-marvel-and-pixar-movies-now-available-in-4k-hdr-on-apple-tv-and-itunes/

When Apple launched the Apple TV 4K streaming box and first announced support for 4K and HDR in the iTunes movie store back in 2017, it had managed to sign up most major studios. But there was one holdout in terms of offering its catalog in UltraHD: Disney.