Hello,
As a Dynamics admin I would like to be notified when a feature becomes ready in one of the org where I am system administrator.
Today it is possible to receive information when a monthly release is about to be deploy but this does not include wave updates.
Regarding updates, the information we have is on https://docs.microsoft.com/en-us/dynamics365-release-plan/2020wave2/
This is not accurate and delivery date varies with no notifications, many features supposed to be in pre-release were not made visible.
Hope it is clear!
Best regards,

Pierre-Olivier