Microsoft announced yesterday that it has started pushing Windows 10 version 21H2, also known as the November 2021 Update, to devices still on Windows 10 version 20H2 that are approaching end of servicing. The company is once again using machine learning models to determine which devices will have a “smooth update experience.”
"Windows 10, version 21H2 is available for users with select devices running Windows 10, versions 2004 and higher who manually seek to “Check for updates” via Windows Update. (...) We also started the first phase in our rollout for machine learning (ML) training, targeting devices on Windows 10, version 20H2 that are approaching end of servicing to update automatically to Windows 10, version 21H2," the company explained on the Windows Health Dashboard.
We started the first phase in the Windows 10, version 21H2 rollout for machine learning (ML) training. We are targeting devices on Windows 10, version 20H2 that are approaching end of servicing to update automatically to version 21H2. https://t.co/l7RbiFyq3O
— Windows Update (@WindowsUpdate) January 20, 2022
As a reminder, Windows 10 version 21H2 is a minor update that only brings improvements for Wi-Fi security, Windows Hello for Business, and the Windows Subsystem for Linux. For users still on Windows 10 version 2004 or newer, the installation process should be pretty fast as Windows Update will just be downloading an enablement package to turn on the new features on Windows 10 PCs.
If Windows 11 is now getting most of the Windows team's attention these days, there are probably many Windows 10 devices that won't be eligible for a free Windows 11 upgrade. That's why Microsoft is committed to supporting Windows 10 until the OS, though the OS will only receive new "major" updates once a year going forward.