Windows 10 is Version 10.0.19044 21H2 (Release Channel)
Windows 11 is Version 10.0.22000 21H2 (Insider Preview Channel)
This could of course change with a Release Version, to 10.1 or 11.0 but at this point I'm not so sure.
Development is going
very slowly, with numerous serious issues preventing widespread support... with exceptionally low adoption rates.
And with good reason.
Look... I've always historically Early Adopted every new build of Windows and while I've had teething problems with various changes., usually in terms of usability...
Well I've never actually "Gone Back" to a previous release of Windows until now.
There is frankly
nothing redeeming about it, to endure it's lack of performance, stability, compatibility or needless UI Changes.
I do not see it being accepted as a replacement for Windows 7 / 10., and I wouldn't recommend wasting your time on/with it.