Microsoft has released Windows 10 Insider Preview Build 20241, the latest Windows build available for Windows Insiders in the Dev Channel. Microsoft has improved the defrag experience and introduced theme-aware app splash screens with the latest build. Windows 10 Optimize Drives Settings page will also feature a new ‘Advanced View’ checkbox designed to allow users to list hidden volumes. Microsoft is planning to update more apps with support for the feature via the Microsoft Store. The feature is currently rolling out only to a subset of Insiders to identify any performance and reliability issues.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-improves-windows-10-defrag-adds-theme-aware-splash-screens/