I don't think "that started" but I believe this remains unchanged if the Windows 10 is the result of an upgrade. That data is taken from whatever was on the boot record when the machine had its first OS installed (or when a completely clean reinstall is done, including reformatting the OS drive).
I don't have time to verify that at the moment, though, and my one "Win 8.1 to Win 10" upgraded machine is not available at the moment for me to check if it's still showing Windows 8.1 there even though it's been running Windows 10 for years now.