Ken Blake, MVP wrote on 08/11/2015 11:11 AM:

And Windows 8.0 was released on October 25, 2012. Since 8.0 is
essentially just an update--what used to be called a Service Pack--to
8.0, that makes its life span over 12 years.


Slight correction

.....Since ***8.1*** is essentially just an update...to 8.0,...


--
...winston
msft mvp windows experience