I wince when I think of people who have bought $300 routers and then WiFi 6 comes out. Even WiFi 6 will take 3 or 4 years to become accessible to most. By then, the battery in your iPhone 12 will be on the way out.
does this wifi6 or 6e will not work on the older router and needs a new one?
If it’s a clear no for iPhones, probably even less so for the MacBook's, right? I was thinking about waiting for a 16” refresh with Wi-Fi 6E this fall, but I think I’ll just buy it now.
Not sure if I understand your question exactly but if you have a WiFi 6 device it will be compatible to work on any older WiFi 5 router.
However to take advantage of the WiFi 6 you need to have both a device and a router that supports WiFi 6.
Currently there are no WiFi 6E devices or routers on the market and to take advantage of 6E you will also need to have both device and router that support 6E.