Microsoft has announced that the original release of Windows 10 will fall out of support on March 26, 2017
Meanwhile, those that deferred 1607 should be seeing that update being offered up and trying to install if you have not installed it already.
January’s lack of non-security updates means that February won’t have any non-security releases.
NEW: Critical Update KB3211320 for Windows 10 Version 1607
On Tuesday night (January 24, 2017), Microsoft released an out-of-band patch for PCs running Windows 10 v. 1607. The Windows 10 build number will remain the same after installation.