Just can’t see the point of this other than for commercial use. It’s been more than a year since 4K blu rays launched and the majority are still coming from 2k DIs, so I imagine it will be long time (if ever) before we see 8k as a standard in films and tv, assuming of course we can develop a mechanism for delivering the content which doesn’t require 1GB broadband speeds!
As much as I love 4K and can tell the difference versus 1080p most of the time, I can’t see that 8k will have any appreciable benefits in the home unless we are talking screen sizes such as in Total Recall and Prometheus...