Microsoft has released a new preview build 22000.100 to Windows 11 Insiders in the Dev channel of the Windows Insider program. Microsoft is updating the hidden icons flyout on the lower right of the Taskbar to match the new visuals of Windows 11. Microsoft also introduces a new alert design that will tell you when an app requires attention. Microsoft Teams Chat app, which is based on Microsoft Teams desktop client, is now rolling out. Microsoft will introduce screencasting and meeting support for users later this month.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-11-update-improves-taskbar-microsoft-store-and-more/