If you're sweet on the latest Apple TV, you're probably also planning on stocking up on 4K downloads. After all, the bump in pixels is its biggest draw. And, if you head to iTunes right now, you'll see that a bunch of content is available in 4K HDR. The same goes for the TV app for iOS, Macs, and tvOS. For now, the selection seems to be limited to movies, but you can expect the line-up to expand before the Apple TV's September 22nd release date. The upgraded flicks carry both the "4K" and "Dolby Vision" tags, as spotted by MacRumors.