Updates on the new Outlook for Windows

PKlapwijk there is now a GPO to manage displaying the "Try the new Outlook" toggle in the current Outlook. The policy was included in the ADMX published from build 16.0.5401.1000. You can download the latest set of ADMX from this location on the download center: Download Administrative Template files (ADMX/ADML) and Office Customization Tool for Microsoft 365 Apps for enterprise, Office 2019, and Office 2016 from Official Microsoft Download Center. Additionally, this can now be configured in Cloud Policy service: Overview of Cloud Policy service for Microsoft 365 - Deploy Office | Microsoft Learn.

Since the new Outlook shares the same codebase as Outlook on the web, the same policies that apply to Outlook on the web also apply to the new Outlook, such as Set-OwaMailboxPolicy (ExchangePowerShell) | Microsoft Learn and Set-OrganizationConfig (ExchangePowerShell) | Microsoft Learn Exchange PowerShell cmdlets. Thanks for the great feedback on managing the new Outlook, we are actively looking at adding new capabilities to help more organizations try out the new Outlook.