https://wccftech.com/microsoft-begins-preparing-final-windows-10-21h2-for-release/

Microsoft has released Windows 10 November 2021 Update for all Insiders in the Release Preview Channel, as the company begins the process of releasing version 21H2. This is expected to be the final version being delivered to Windows 10 as the company has moved on to the next generation of Windows with the release of Windows 11. The operating system will continue to be supported until at least 2025.

The Windows maker said that it believes Build 19044.1288 is the final build for the November 2021 Update. This build will be followed with cumulative updates for any last minutes fixes.