Microsoft today announced the release of Windows 11 Insider Preview Build 22621.440 and Build 22622.440 (KB5015890) to the Beta Channel. This build brings back the new taskbar overflow experience. The Windows 11 taskbar will automatically transition to this new overflow state when it has hit its maximum capacity. You can open the overflow menu to view all your overflowed apps in one space. After invoking overflow, the menu will dismiss automatically once you click outside of it or navigate to an application.
Also, starting with this build, Microsoft is rolling out the updated “Open with” dialog box again to align with Windows 11 design principles. The updated dialog box honors light and dark themes. You can now update your default app with just one click. 
Other improvements in the build:
- We have updated the U.S. English (EN-US) handwriting model to be faster and more accurate. Use the updated Handwriting Panel for ink-to-text and let us know what you think.
- Settings now supports managing apps which were earlier only supported from Control Panel. This includes uninstallation of apps which have inter-dependencies (e.g., Steam and gaming apps running on Steam), repair and modifying of Win32 apps.
You can find the full change log of this build from the source link below.
