As part of the 19H2 development, Microsoft is rolling out Windows 10 build 18363.385 for devices enrolled in the Release Preview ring of the Windows Insider Program. This is the preview number 12 available to testers, and it’s releasing as cumulative update KB4517211.
Windows 10 build 18363.385, according to the company, is an update package for devices running the build 18363.329 to test the servicing mechanism for version 1909 arriving in the coming weeks, and it includes all the same features and changes available in the Slow ring.
In addition, Microsoft is also rolling out Windows 10 build 18362.385, which contains all the same improvements as build 18363.385, but this flight is available for devices running build 18362.329.
Insiders in the Release Preview ring who hasn’t previously installed the 19H2 update, they will receive build 18363.385 (KB4517211) when checking for updates from the Windows Update settings page.