Microsoft is currently in the final phase of preparation for the Customer Driven roll-out, which will allow Customers to schedule the update of an instance to Dynamics 365 v9.0. The target date is set for January 2018, with a processing window of the scheduled updates to begin in February 2018.
Dynamics 365 administrators will be notified in the Office 365 message center and via email when the update schedule window opens. Administrators will be able to schedule and book the preferred and alternate dates for this upcoming updated.
The update to Dynamics 365 v9.0 can be upgraded from Dynamics CRM 2016 (8.0), Dynamics CRM 2016 SP1 (8.1) or Dynamics 365 (8.2).
At this point Updates for Dynamics 365 Government and Dynamics 365 Germany will not be available.
To read the release article on the Dynamics 365 Team blog click here.