The Witcher 3 announced to change minimum requirements from Windows 10 to Windows 11 in future patches, and its planned DLC "Songs of the Past". However, I'm not sure if the game will itself block 10 as...

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Without ongoing security updates, official platform support, and continued GPU driver support, we will no longer test our games on Windows 10. 

https://support.cdprojektred.com/en/witcher-3/pc/sp-technical/issue/2973/upcoming-changes-to-minimum-requirements-for-the-witcher-3-wild-hunt

If NVIDIA drops GeForce GRD driver support for Windows 10 after October, you may use the last Vulkan beta driver compatible with Windows 10 and vkd3d-proton as a workaround for a while. However, if the game requires complete DirectStorage support, there is nothing you can do except upgrading.

From 1507 to 22H2, Windows 10 has many versions, which have different hardware & software compatibility issues. So making a compatibility list for Windows 10 is a nightmare. Anyway, NVIDIA just dropped support for DCH control panel.

Gah, I can't believe this thread has become a reality 

 

I hope Steam and the various launchers remain compatible with Windows 10 for as long as possible.

I really don't want to be forced to use Windows 11 to play (older) games.

Edited June 5Jun 5 by superleiw