Fox Orlando have released a new aerial video earlier today showing Hogwarts castle, built for the Wizarding World of Harry Potter. Noted in the new footage is that all scaffolding has been removed from the castle - which will host the still-mysterious Forbidden Journey ride - thus we can assume most work on the exterior construction has been completed. It can be viewed below.
http://www.universalorlandoresort.com/harrypotter/sneak_peek.html
The Wizarding World of Harry Potter will open in spring 2010.