Remember the hype about the Win10 version 1909 upgrade — how this fall's Win10 1903 update would contain all of the 1909 features, lacking only the flip of a light switch to turn them on? Here how Microsoft puts it:Windows 10, versions 1903 and 1909 share a common core operating system with an identical set of system files.
Therefore, the new features in Windows 10, version 1909 were included in the latest monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are in an inactive and dormant state.
These new features will remain dormant until they are turned on through the &enablement package,& a small, quick-to-install &master switch& that activates the Windows 10, version 1909 features.