Microsoft 2022 began testing a new version of Outlook application for Windows, to replace the previous system “mail, calendar” and other applications, The new version of Outlook in the public beta version this year, after Microsoft had “many times” to promote the transition between the old and new versions of users. The new version of Outlook was launched in public beta this year after Microsoft had “several plans” to promote the transition of users of the old and new versions.
The new Outlook app requires a subscription to Microsoft 365 or Office 365 services to use and is based on a PWA (the new Outlook app is a web wrapper, not a native app), which has caused some dissatisfaction among users.
In the latest Beta Channel Windows 11 release, Microsoft is pushing the new Outlook app to Windows Insiders. x-platform user PhantomOcean3 noticed that his Windows 11 Beta Channel version 22631.2338 (KB5030305) automatically installed the new Outlook app after a reboot. Outlook.

▲ Source PhantomOcean3’s posting on the X platform
In response, Brandon LeBlanc, senior program manager for the Windows Insider program, said that this was intentional on Microsoft’s part.

▲ Source Brandon LeBlanc’s post on the X platform
Microsoft has been testing a new version of Outlook since September of last year that integrates Mail, Calendar, and Contacts from the current Windows, similar to the earlier Windows 8-era Hub design that brought everything together in one place, but with a greater emphasis on functionality, and Microsoft plans to stop supporting Mail and Calendar completely by the end of 2024. Microsoft plans to stop supporting the Mail and Calendar apps completely by the end of 2024.