The ubiquitous and all-pervasive Wi-Fi is receiving its first major update in 14 years with the announcement of the WPA3 authentication protocol by the Wi-Fi Alliance. WPA3 is the successor to WPA2, which was the target of many hackers in the last year and comes with new features that prevent offline dictionary attacks and enable forward secrecy. The protocol is available for implementation in new routers today and is expected to go mainstream by 2019.
https://www.notebookcheck.net/Wi-Fi-gets-its-biggest-update-in-14-years-WPA3-security-protocol-now-official.312494.0.html
I don't expect AX + WPA3 to have fairly "finished" products until 2019 at the earliest.
I still remember all those "pre-N" routers that ended up being dung and not being able to manage real "N" protocol even with firmware updates.