Changes to Coming Soon in Outlook for Windows

rpodric 

Thank you for your feedback.  We rolled out the user experience as a preview in Coming Soon before the changes become the default experience.  In particular, the Coming Soon feature can help companies introduce change when it’s convenient, before changes become the default experience, and provides an opportunity to provide feedback so Microsoft can continue to listen and learn from customers.  We also encourage customers who would like to receive changes sooner to enroll in our Office Insider’s program.

I am not sure why your Coming Soon option disappeared, but it may have been due to the control we made available to administrators to manage the experience for their company.  Companies can prevent their users from having the Coming Soon option through group policy administration, or users can try the experience with the Coming Soon feature and turn to the classic experience at their convenience.  The control is available through a group policy, and you can find the instructions in our September blog: “If you're an admin, you can use a regkey to hide the Coming Soon feature in Outlook for Windows.  Learn more.”