Since the beginning of time, Windows operating systems have had a major version and edition, and then various updates. Originally Service Packs, but since Windows 10/2016 its been version numbers.
Now Snow always used to report on Service Packs, but since version numbers have been used, Snow Inventory would pick these up, but there was no report in Snow License Manager. This is now fixed - you can access version numbers in the Operating Systems Report:
And also in the computers tab within the OS Application
So why is this interesting? Older Windows 10 and 2016 builds are going End of Service, and as such need to be updated - 1607 and earlier are already End of Service.