From Joseph Lee, on Windows Access for Screen Reader Users Group message #
54796 ( https://winaccess.groups.io/g/winaccess/message/54796 ) :

*NVDA 2021.2 is required when using Windows 11 (older releases will work but
support isn’t really guaranteed). I would say that it would be best to think
about Windows 11 upgrades after NVDA 2021.3 comes out.*

I would presume that 2021.2 would be just fine.  But I'll add to what Joseph
said by saying that I wouldn't be in any rush to upgrade to Windows 11 until
at least 4 to six months have passed since its introduction (which is
effectively now).  So, I'd not be doing a Windows 11 upgrade until February,
at earliest, and would probably wait until early May 2022.
--

Brian - Windows 10, 64-Bit, Version 21H1, Build 19043

*The ignorance of one voter in a democracy impairs the security of all.*

~ John F. Kennedy