Until Windows 10 version 2004 (May 2020) this can be found from registry entry
ReleaseID, after that we must use entry DisplayVersion (ReleaseId is stuck at 2009).
Source: https://ss64.com/nt/ver.html
After this patch the version command will be
- fully supported on openbsd/amd64
- stay stub on openbsd/i386 until we deprecate go 1.17
Remaining os/arch combinations stay as is.