This is true, but movies purchased on iTunes can only be downloaded at 720p or 1080p. To play back in 4k/HDR it must be streamed. It sucks because I don't own a 4K blu-ray player but wanted a few movies to try out my OLED and bought some movies on iTunes. They look great, and comparisons online put them within close distance to 4k blu-rays in quality, but I can never "own" them in full resolution.