KB4552455 is a small update that bumps the version number to build 19041.172, and according to the company fixes an issue that prevents the Windows logo key + J keyboard shortcut from giving focus to certain Windows tips.
Download Windows 10 build 19041.172
Although there are no ISO files for Windows 10 build 19041.172, the update is available immediately through the Slow ring. This preview build will download and install automatically on your device, but you can always force the update from Settings > Update & security > Windows Update, and clicking the Check for updates button. You can also check out these resources:
Windows 10 version 2004 all the new features and changes Windows 10 version release history tracker
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