Microsoft has issued the fourth pre-release build, 22000.100, of Windows 11 to testers, adding Chat with Microsoft Teams and other changes.

Of course, this is the Windows Insider Program, so “not everyone will see [Chat with Microsoft Teams] right away,” for some reason.

Other minor new additions and changes include:

Hidden icons flyout improvements. The hidden icons flyout at the right side of the taskbar has been updated with the Windows 11 look and feel.

Focus assist improvements. Focus assist settings is now accessible from the Notification Center panel.

Improvements to background activities that need your attention. In Windows 10, background activities that need your attention will flash on the taskbar, but that’s not calm enough for Windows 11. So in Build 22000.100, these apps will get your attention more calmly, with a subtler flashing that eventually stops. When it does, you will see a red backplate and a red pill under the app icon.

Touch keyboard improvements. The Touch keyboard icon in the taskbar has been updated to be more consistent with the size of the other icons in the newly-renamed “far corner of the taskbar.”

Calendar flyout improvements. The Calendar flyout on the taskbar now collapses fully when you select the chevron in the top corner, giving you more room for notifications.

Microsoft Store improvements. Now, when you select an app or movie in the Store app, you will see some animations that Microsoft says will “help you keep track of what you’re browsing.”

There are a bunch of fixes, too, including the big Explorer crash introduced in the previous build that happened when you had the temerity to click the date and time in the taskbar. In the bad news department, Microsoft currently has no plans to fix Windows 11’s inability to let users drag documents to app icons in the taskbar to open them, a feature that’s been in Windows for decades. Hopefully, that will change over time.