[Alidar Jarok]

They are adding scenes that were left implied (or invented post hoc to explain why Gandalf disappeared). Plus, there were more action scenes in the Hobbit and less description. If the movies are a touch shorter than Return of the King, it might make sense as two movies. If all this info could have been fit into a RotK length movie, maybe one would have been appropriate.

I'm willing to wait and see. The titles alone give me hope that they know what they're doing.