https://www.bleepingcomputer.com/news/microsoft/windows-10-1809-cumulative-update-kb4495667-released-with-fixes/

As a Friday afternoon surprise, Microsoft has released the KB4495667 Cumulative Update for Windows 10 October 2018 and Windows Server 2019. While I have spotted it being available from Windows Update, as it has just started rolling out it may take some time to be available in all regions.

This update is titled "2019-04 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB4495667)" and is the second Cumulative Update released this week, with KB4501835 released two days ago.