Dynamics 365 Online V9 – Need to postpone the upgrade?
So for one or more reasons your organization will need to postpone as long as possible upgrading your CRM Online instance from 8.x to 9.0.
How far out can you push it?
The last date in the schedule is August 6, 2018.
And if you push it that far then the only alternate date is August 20, 2018.