My guess if they did combine it, it would probably be one Galaxy line where you have the Galaxy (S), Galacy+ (S+) and then the Galaxy Note Ultra with the pen and it retains the squarish shape along with the Fold... and then the Galaxy Fold and Flip. And honestly I think they should combine like this so they can launch all phones at the same time in March instead of two flagships 6 months apart from each other. The Ultra and Fold would have the silo still for internal S-Pen carry. Not sure if they would make the other model screens pen capable and the pen is available as an accessory and carried separatley... adds cost adding the layer on the screen for pen input.