Microsoft has released a new cumulative update for Windows 10 Version 1903 as KB4495666. The update takes the build version to Build 18362.53 and is rolling out for Slow, Fast and Release Preview rings.
Build 18362.53 Changelog & known issues:
Microsoft released a new cumulative update to Window Insider program Slow, Fast and Release Preview rings. If you have updated to Build 18356.30 – your device will be offered this build. This update also includes security updates that come as part of the normal monthly Patch Tuesday release cycle.
For more information about the Windows 10 Insider Preview, see the Windows Insider Program blog. After installation, OS Build will be 18362.53.
Known issues in this update:
Windows Insiders may also download the standalone package for this update, go to the Microsoft Update Catalog website.