Scott went to a demo this week of the Olympics being streamed live over the internet via OpenCloud. The noteworthy bit was that the live stream was being done in 8K at 60fps at 100MBps HEVC, and compressing it in real-time before being streamed online. The computer compressing it had 4 Intel Xenon processors to handle the heavy lifting and then outputting it to 8K HLG at 60fps. Scott was watching it on a 75" 8K TV. You can read Scott's Tech Hive article here.
Leo says he's been watching the Olympics in 4K HDR through YouTube TV, and it won't be surprised if we get 8K streams in 4 years from the Games in Paris.