According to the official changelogs (Windows Insider Preview link), the update KB5011563 for Windows 11 introduces new changes for the notifications, fixes startup problems with Universal Windows Platform (UWP) apps, addresses memory leak and network-related problems, and a lot more.
Update KB5011563 fixes and changes for Windows 11
These are the fixes and new features available with the latest update preview of Windows 11:
Install Windows 11 build 22000.593
If you want to download and install the Windows 11 build 22000.593, you will need to open the “Windows Update” settings and click the Check for Updates button. Update March 28, 2022: The update KB5011563 was originally available in the Beta and Release Preview Channels as build 22000.588, but starting on March 28, the same update is available as an optional install as build 22000.593 for Windows 11 in the stable channel. All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.