Hey.
You need to be aware of a few things
a) Microsoft releases 2 "big waves", in April and October. However, part of the content of such waves can be delayed (for example, instead of October, December). IN this case, you should download the PDF file that contains improvements scheduled on each wave, as they contain a calendar with estimated dates.
b) Microsoft releases every weekend a set of updates/Hotfixes. Usually this happens Friday Night/Saturday morning. In your Health&MEssage Center (admin.microsoft.com) you should have the communications.
c) Functionality is deployed on different versions depending on the region. Usually South America, Canada, France, Switzerland, Germany are amongst the first to receive the updates. This is availabble on https://learn.microsoft.com/en-us/dynamics365/released-versions/dynamics365sales#latest-version-availability
A recommendation: in early days of March / September, deploy a new Sandbox with a copy of your production (or test environment) and deploy the waves there, to see the changes on the behavior
Regards
