Come on Aeroman give us a clue
You don't need a clue, you already know about it.
Leave it to Stir-o-man to do a seagull.

Morgan seem committed to the BMW V8 4.8; however, at some point, probably post SS production, I would imagine they will move to another Munich sourced power plant.
As someone mentioned above, many of the car makers are now suggesting that they can get better performance and higher MPG out of a supercharged / turbocharged V6.
The engine could be smaller, lighter and offer better performance - all things that would suit a Morgan (as long as they don't sacrifice torque).