I have one Windows 10 Professional machine set up with an agent. I have noticed after the agent does a patch scan, the operating system reports as Window 10 Pro. After a check-in or asset scan, it shows as Windows 8.1 Pro. The machine originally was Windows 7 Professional and was upgraded to Windows 10 after the release date. I am not sure if the agent was removed and reinstalled after the upgrade.
We are running protect 9.1 build 4511 and the agent is version 9.1.4334.0.
The machine is installing patches for Windows 10, so it is just a reporting issue. I haven't seen anyone else report this yet, but maybe I missed it.