Soon, when you buy
a new PC, it won't support Windows 7 or 8. Microsoft has announced a change to its support policy that lays out its plans for future updates to its older operating systems, and the new rules mean that future PC owners with next-generation Intel, AMD, and Qualcomm processors will need to use Windows 10. This new policy doesn't mean that Windows 7 and 8.1 are no longer supported in general. The two operating systems will continue to get updates through January 14th, 2020 and January 10th, 2023, respectively. But that's only if you're using hardware that was contemporaneous with those operating systems.
Sure, PC users can use WSUS offline as a workaround. Still, those wishing to upgrade to newers CPUs will now also have to think about the cost of upgrading their operating systems!