A new feature is coming up to Outlook for Windows allowing you to get sneak peek of what is coming on.
The feature is currently being deployed/enabled for Office 365 First Release tenant and will be available to Outlook client deployed with Office Click to Run.
When the feature is available, your Outlook client will show a toggle to enable the ‘Coming soon’ feature – showing up at the top right
When you turn on the feature you will be asked to restart Outlook
Once restarted, Outlook for Windows will then enable the features planned for deployment.
NOTE once the ‘Coming soon’ features are rolled out and deployed in GA, the ‘Coming Soon’ toggle may disappear to then reappear once new ‘Coming soon’ feature are available.
Administrators can use the updated Office Customization tool and ADMX files here https://www.microsoft.com/en-us/download/details.aspx?id=49030 to manage this new capability