As of this past week, you could still have a picture taken in front of the castle...they haven't done anything to it yet.
They had photographers just inside the gates, with Mickey and the train depot in the background, pictures with Mickey in his house in Toon Town, and in a lot of locations inside California Adventure: in front of Tower of Terror, under the Golden Gate Bridge, at the entrance to Paradise Pier.......
You'll have a lot of choices, and maybe you'll be lucky & still be able to to do it front of the castle.