Windows 11 first showed its face on June 24, 2021, and became officially available on October 5 of that same year. Today, most laptops sold come with Windows 11 installed out of the box, but the Windows development cycle never stops, and there's always something to look forward to. That's where the Windows Insider Program comes into play, as it lets fans try out new Windows 11 features in preview before anybody else.
source https://www.xda-developers.com/windows-11-features-in-preview/