The Great Wall has moved! I haven't been at MK for nearly a month, but a CM told me this move just happened last night. I'm sure someone with fancier cameras will have better photos, but here's what I've got for ya now:
The walkway just south of the Snow White attraction has been moved down below part of the new Castle Wall:
Here is the entrance to the new walk area, the old Snow White is directly to the right of the image:
A closer look at the entrance:
View from the other side (Pooh is to the left):
Here's a photo of the new ground, plus the door used by Guests experiencing the new Enchanted Tales with Belle: