I remember reading an article
I remember reading an article earlier this year about the math of being able to notice the difference in resolution, I don’t remember the exact figures, but the author infered that you would need a display the size of the side of a house to notice a difference sitting 15 feet away.
4K and 8K are what movie theaters use, I don’t think you will be able to notice that increase in resolution in your average living room or game room.
I personally think this is just more marketing to get people to buy a new TV. Since 3D hasn’t really taken off the way HD did, they will now offfer SUPER-HD!!(4k) And then SUPER-DUPER-HD!!(8k)
Also, 4K will require more processor power for new codecs (I think it’s H265) that will have to squash the data stream more and still need more bandwidth wether delivered via OTA, Sat, cable or SUPER-BluRay disc. Oh, and new BluRay players too. What about the surround sound standard, will we increase to 12~20 audio channels?
I personally am content w/ 1080p and would be more than satisfied if the vendors just worked on making the best 1080p display they could. Pick one thing and do the best you can at it.