|The new Outlook for Mac will connect to accounts using Microsoft sync technology for enhanced performance and reliability, with functionality that showcases the best of Outlook.
Note:The new Outlook for Mac experience became the default experience in our Beta and Preview channels, while still allowing users to toggle back to the legacy experience (Help > Revert to Legacy Outlook), if desired.
This message is associated with Microsoft 365 Roadmap ID:88850.
When this will happen:
We will begin rolling this (release 16.58) out in mid-February and expect to complete rollout late February.
How this will affect your organization:
With the addition of Online Archive, Shared Mailboxes, Shared Calendars, and Delegation, we will roll out a change, making new Outlook for Mac the default experience in the current channel for any users who have never tried the new experience or have tried and left the New Outlook.
Outlook Mac users in your organizations who may have previously not used New Outlook or have tried New Outlook and switched back to Legacy Outlook may have questions. The new experience is fully supported, and users can reach out with support questions via Help > Contact Support.
What you need to do to prepare:
You might want to notify your users about this change and update your training and documentation as appropriate.
View this message in the Microsoft 365 admin center