I have also seen references to 22000.1 after running SFC / Scannow and viewing the CBS Log .
Perhaps someone can explain why that number appears in the log.
Like this :
2021-07-05 18:12:19, Info CBS Loaded Servicing Stack v10.0.22000.51 with Core: C:\WINDOWS\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22000.51_none_eb9ee534e31c144b\cbscore.dll
Win11 is based on 22000.1 with a CU kb5004564 taking build to .51. Unless there is going to be a significant change, we should only see CU's, possibly Feature Experience Packs from here on.
Similar to 19043.1082 being based on 19041.1 with CU and Enablement.
Regards,