i just watched in 4k 60p on my 40" 4k monitor. I can see a clear difference between native 4k and 8k downscaled to 4k on certain shots. (not all shots) but some shots in this video, mostly the first shot with the sun / mountains. Were some of the most detailed images I have ever seen on a youtube video. 8k is definitely the next wave. It looked as detailed as a .Raw format photo, just moving.