Sharp plans to launch the world's first "8K tuner" in late November.
In Japan everything related to 8K broadcasting is timed to coincide with the 2020 Summer Olympic Games in Tokyo, and as such broadcaster NHK is planning to kick off hybrid 4K/8K broadcasts beginning December 1st. Assuming you have access to an 8K TV or projector, you'll need a box to actually catch and process the Super Hi-Vision video signal, and fortunately Sharp has one ready to connect to Sharp's 8K TV (LC-70X500), which was launched in 2017.
Provided that the TVs supporting newer standards like HDMI 2.1 aren't out yet, plugging the box in for viewing will require four HDMI cables and a software update for the LC-70X500 Aquos 8K TV.
A software update will be also necessary for the LC-70X500, and will be released by Sharp in November.