Following are the enhancements introduced in this release:
Enhancements to Send For eSignature User Interface
In this release, the user interface of Send For eSignature pages is enhanced in Salesforce lightning.
Updates to Send For Echosign Custom Button
In this release, the formula field is updated for Send For Echosign custom button to support the Lightning user interface. The administrator needs to update the formula field for Send For Echosign custom button to see the Lightning user interface when working in Lightning mode.