Sharp to sell world's first 8K TV in October, for about $125,000
http://fortune.com/2015/09/16/sharp-8k-tv/
I can't even imagine how they would even get content out for that thing. They are just now ready to roll out blue-ray disks capable of 4k. There's no way they'll be able to fit 4 times the data on 1 disk. This isn't even mentioning streaming 8k content, or downloading it with any regularity.