"At CES 2020, we saw many more Wi-Fi 6 devices announced. You might actually get some Wi-Fi 6 hardware this year-but is it worth the upgrade?" asks Chris Hoffman in How-To Geek.
"What Is Wi-Fi 6, and Why Should You Care?
Wi-Fi 6 is the latest generation of the Wi-Fi standard. The Wi-Fi Alliance retroactively renamed older standards, so 802.11ac is Wi-Fi 5 and 802.11n is Wi-Fi 4. Wi-Fi 6 is also known as 802.11ax, but version numbers make things much simpler. It's easy to understand which versions of Wi-Fi are faster and newer..."