Apple TV 4K Features HDMI 2.0a. But HDMI 2.1 is Coming

4K/UHD TV is now mainstream.  But new 8K TVs are coming. CNET writes: “The current version of the ubiquitous HDMI [2.0] audio video connection can handle pretty much every video format available today, but with 8K on the horizon, TV and other hardware makers could hit its limits in the next few years. That’s where HDMI 2.1 comes in.”
This article fills you in on the new standard, what video protocols it supports, which TV makers are moving to it in 2019, and whether you’ll need new cables.