Prediction: This will be the Roger Rabbit of Disney Princess movies.
If you're just creating this thread for your magic prediction, perhaps you could elaborate on what you mean by this?
Meaning in the same way Roger Rabbit had animated characters from all over the cartoon world, Enchanted 2 will feature more than just one princess.
Imagine the draw of seeing the classic animated Disney princesses step into the real world.
I know that you can go to Disney World and get the same sort of effect, or see certain shows on Broadway, but it just wouldn't be the same.
The only real difference as far Roger Rabbit goes is that there really aren't a lot of princesses outside of the Disney realm (Fiona? Anastasia, maybe? Mononoke? Anyone else?).