Keep an eye on hours. By the end of the month, the hours drop off quite substantially. Last year, by August 19th, the parks were only open until 8 pm, so keep an eye on the hours. We've been several times during the last week of August. It can still be quite busy and is VERY HOT!!! So definitely get there before opening, take advantage of the water rides and take a break in mid day. Transformers will be open by mid August as well as the newly themed Simpsons area with one new small ride. Despicable Me is new and I think the Spiderman ride has been upgraded since you've been there. There is a new miniature golf course, well two courses, at the exit to Citywalk as well. There is a new daily parade at the studios and a lagoon show at night. There are rumours of a lagoon show for IOA but I haven't heard any final details on that. The whole Jaws area is gone and is under construction for the new Diagon Alley. There is also construction outside of WWoHP for the new Hogwarts Express ride that will join up the two Harry Potter areas of the two parks. You may see some construction at Jurassic Park as the new renovations and new coaster may have been begun there.