https://wccftech.com/second-batch-of-january-2020-windows-10-cumulative-updates-out/

Microsoft has delivered another stream of Windows 10 cumulative updates for almost all the versions of the operating system except for the last two - the May 2019 Update or version 1903 and the November 2019 Update or version 1909. Today's non-security patch brings quite a long list of bug fixes and quality improvements.

Windows 10 cumulative updates are also out for Windows 10 1803 (KB4534308 - Build 17134.1276),  version 1709 (KB4534318 - Build 16299.1654), and version 1607 (KB4534307 - Build 14393.3474).