https://www.cnet.com/news/ces-2019-wont-be-a-big-leap-forward-for-tvs-heres-why/

To see evidence of what I mean, check out David Katzmaier's CES 2019 TVs preview. He's already been briefed by the big TV makers and none of the stuff he highlighted -- 8K TVs going on sale, rollable OLED, the trend toward larger screens and built-in Alexa and Google Assistant voice control -- is new for 2019.

The next-generation HDMI spec is called 2.1. This is what's required to send 8K content from an 8K source to an 8K TV. Without 2.1, you'll only be able to get 8K content, what there is of it, from internal apps.