Additional information on What’s new in SP04 can also be  found here https://help.sap.com/viewer/791c41982ee345a19c4ec4b774222c4f/16.0.4.0/en-US/5db753f3a9c24ddcabc2581a98b99585.html

This link https://help.sap.com/viewer/791c41982ee345a19c4ec4b774222c4f/16.0.4.0/en-US/5302bd838d444e2ab67b470508988383.html points you to what's new in ASE from where you can pick up other than SP04 release as needed.