A new Windows Insider Preview build for the Dev channel offers some improvements to Setup and the app defaults interface.

“Today we’re releasing Windows 10 Insider Preview Build 20231 to Windows Insiders in the Dev Channel,” the announcement notes.

Here’s what’s new.

New customization screen in Setup. An experimental new version of the “Customize your device” screen seen during Setup will help the system better understand how you plan to use your PC and aid in customizing your it given your intended usage, Microsoft says. There will be more improvements and changes in the future, this is apparently just an early stab at this functionality.

Improved app defaults management. This feature, sadly only for enterprise customers, allows you to modify file associations on a per-user or per-PC basis. And that’s not the end of the bad news: Microsoft is A/B testing this feature because of course it is.