We have an upcoming Edge Management Server release window scheduled for 9:00 AM Thu Jan 16, 2020 to 2:00 PM Fri Jan 17, 2020. The releases are rolled out in phases based on regions. This release is not expected to cause any interruption to Apigee Edge.
Once the release window is complete, release notes will be published at: http://apigee.com/docs/release-notes/content/apigee-edge-release-notes
In the event that no functional updates have been made to Apigee Edge, you will not see new release notes.