Here's a very interesting information. As we know, Microsoft Windows XP has ended its support on April 8, 2014 yet some of the companies still use it as its computer operating system as their computers hardware isn't supportive with the newer operating system.
Here is a information from Microsoft on its Supporting End Dates.
http://www.allyncs.com/docs/lifecyclesupport.html
http://www.allyncs.com/docs/lifecyclesupport.html
Other supporting information as listed below links.
https://support.microsoft.com/en-us/gp/lifeoffice
https://blogs.technet.microsoft.com/…/save-the-date-end-of…/
https://support.microsoft.com/en-us/gp/lifeoffice
https://blogs.technet.microsoft.com/…/save-the-date-end-of…/
So should we start upgrading our computers to support Windows 10? I don't know. There are still some bugs in Windows 10 but some uses are alright. Some aren't. It depends what work and how it is used. Most computers in the market has already been integrated ready with Windows 10. So, I guess its ok to move in straight to it.
http://www.allyncs.com/docs/lifecyclesupport.html