Microsoft is making some changes to the update schedules in April in response to COVID-19.

The following is a statement from Microsoft of what has been released for Wave 1 and what is planned for September 2020:
Microsoft statement. 

The upgrade window will be extended from 30 days to 60 days. This should help clients to uptake the 2020 release wave 1 update when it is most convenient.

The 2020 release wave 1 update for Dynamics 365 Business Central will be rolled out gradually across all regions over the next several weeks, so you must wait for an email notification stating that your environment has been scheduled for the update before you take any action.

Starting from the official release date, Microsoft begins scheduling updates. Scheduling does not occur for all environments around the world simultaneously. During scheduling, Microsoft sets a default update date for each environment. You can see this date in the environment details page in the Business Central administration centre.

If you do not change the default date, Microsoft updates the environment any day between the scheduled update date and the date that is shown as the last possible update date. You can change this date at any point of time, including changing it to the current date. In some cases, Microsoft can suspend or postpone all updates beyond this last possible date.

When the scheduled update date arrives, the update runs automatically within the update window that you have specified for this environment. All users will be disconnected from this environment, and all login attempts during the update will be blocked with the message ‘Service is under maintenance’. We strongly encourage that you set an update window for all production environments so that updates do not start during business hours.

We elaborate on this announcement, including what our favourite features of the 2020 release wave 1 are, in this blog.  

For further information regarding the release timetable, click here.