Here is an overview of the most significant changes in the context of ABAP core development that relate to the:
Configuring Code Completion to Automatically Insert the Full Signature*
When you perform code completion, you can now configure the preferences to insert the full signature of a method, function module, or form routine automatically.
For more information, look here Inserting a Full Signature Automatically
Configuring Code Completion to Overwrite Source Code*
When you perform code completion, you can now configure the preferencs to overwrite the existing keyword or identifier with the selected proposal from the code completion list.
For more information, look here Inserting or Overwriting Source Code