Multiple device support - Automap 3 Pro supports multiple devices, so numerous Novation controllers can be used side by side.
Keystroke Assignments - Automap 3 Pro can assign almost any computer keyboard shortcuts to hardware controls. For example arrow key functions can now be assigned to hardware controls, allowing you to flick between tracks using buttons on your SL/Nocturn. You could also zoom in and out, open windows or create and jump to markers in your DAW.
XY Pad Control - Fully Auto-mappable XY Pad control, expression pedal, control pedal and drum pad control. The Automap server can now assign parameters to all these controllers using the ultra-quick learn facility. (Pedal/pad control not supported by SL Compact)
Drag and Drop - You can now drag and drop control mappings and control map groups in the GUI, allowing you to re-assign knobs, faders and buttons by simply grabbing them with the mouse and dropping them on the new controller.
Autoview Mode - Optional Autoview mode means that the GUI only becomes visible when a controller is touched, then it disappears again allowing you to get back to your DAW