Computerworld - https://www.computerworld.com/article/3269734/microsoft-windows/microsoft-drops-support-extension-for-windows-10-enterprise.html#tk.rss_all
What Redmond giveth, Redmond taketh away.
Microsoft ended a six-month support extension for enterprise users of Windows 10 with the feature upgrade released last week.
[ Further reading: Windows 10 April 2018 update: Key enterprise features ]
All editions of Windows 10 1803, aka the “April 2018 Update,” will be provided security patches and other bug fixes until November 2019, or for the standard 18 months. That will be in contrast to the four previous feature upgrades, designated as 1511, 1607, 1703 and 1709 in Microsoft’s yymm format. Customers who licensed Windows 10 Enterprise or Windows 10 Education received 24 months of support