Microsoft promises at least 10 years of support for Win10
 

Despite some confusion over statements made by Microsoft executive VP Terry Myerson at Windows 10's introduction, the new operating system does indeed have a support life cycle. The company's freshly updated life cycle schedule shows that WIndows 10 will enjoy the same ten-year support period as Redmond's previous operating systems, with a minimum of five years of mainstream support and five more years of extended support.

The dates don't exactly correspond with the July 29 release date, extending to October 13, 2020 for mainstream support and October 14, 2025 for extended support. Those dates are calculated using the date of general availability, ...

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