windows,

[alfred]

windows 7. 10, now 11, where will  it end ,
of course like everything else another way of making you spend your hard earned cash,

i assume Gmail will still run even if people don't or wont change to windows 11,

[klondike]

Gmail is just a web application and you can use it with any modern browser so any operating system unless really old.

In theory from 7 to 10 should have cost money but apparently didn't or there was some way around paying.
From 8 to 10 is free (I think) as is from 10 to 11 but a lot of older machines won't meet the requirements for 11.
10 will be supported til about 2025 and will still run for as long as you like but without vulnerabilities being patched it may be wiser to put Linux on such machines.