DE 7.2.1 incorporates enhancements to streamline in-place upgrade to Windows 10 Anniversary Edition and Windows 10 Creators Update.


DE 7.2.1 creates a setupconfig.ini file upon install and upgrade which contains the reflect drivers switch required during the Windows upgrade process.


This makes the whole Windows 10 in-place upgrade process much more streamlined, allowing upgrades directly from Microsoft update servers with zero touch for IT teams.


For details please refer to KB89000.