Schedule your Dynamics 365 online for V 9.0 Update
Starting January 15th, 2018 you are now able to schedule updates to occur from February 20th through August 20th. This will give you up to six months to complete the update to the newest release of the Microsoft Dynamics 365 service.
I just scheduled the update for my Dynamics 365 instance from the Dynamics 365 admin centre and got a date in Feb
Read more about the announcement here - https://blogs.msdn.microsoft.com/crm/2018/01/12/scheduling-your-dynamics-365-organization-for-microsoft-dynamics-365-online-version-9-0-update/
You can read more about managing updates here - https://docs.microsoft.com/en-us/dynamics365/customer-engagement/admin/manage-updates
If you missed the updates, you can read all about the new features in v9.0 of Dynamics 365 here. https://docs.microsoft.com/en-us/dynamics365/get-started/whats-new/customer-engagement/new-in-version-9
I have written a couple of articles about my favorite features here - The first post is was about the unified interface. The second post was about Embedded Flows. The third was about virtual entities.