event filter release notes

doc/releasenotes.md

+## **Release 3.x.x**
+
+### **New Features**
+
+#### **Added Event Filters**
+- New filters for Event service subscriptions.
+    - Now, you can specify from which API, AEF or Invoker you want to receive the event.
+    - These filters are specified in the ***eventDetails*** of the subscription.
+
 ## **Release 2.0.0**
 
 ### **New Features**