https://www.windowslatest.com/2021/06/09/microsoft-accidentally-confirms-windows-sun-valley-update/

Microsoft accidentally confirms Windows Sun Valley update (windowslatest.com)

"As you can see in the above screenshot of Microsoft’s support document search page, it appears that Windows Sun Valley will co-exist with Windows 10.

This implies that Microsoft will continue to support Windows 10 alongside this new operating system. In fact, there’s a possibility that the company will do two different updates this year, one for enterprises and one for the mainstream audience."