Following are the dates of the Windows 10 feature updates since its introduction in 2015. The version numbers are Microsoft's internal naming and do not follow any convention that users can relate to. See
Windows as a service and
Windows 10 versions.
May 2020
Windows 2004
Win Server 2004
May 2019 Novermber 2019
Windows 1903 Windows 1909
Win Server 1903 Win Server 1909
April 2018 November 2018
Windows 1803 Windows 1809
Win Server 1809
April 2017 October 2017
Windows 1703 Windows 1709
August 2016 Anniversary Update
Windows 1607
Win Server 1607
July 2015 Novermber 2015
Initial release Windows 1511