The Wizarding World of Harry Potter - Diagon Alley is continuing to grow at a quick pace ahead of next year's grand opening.
Orlandounited.com took a helicopter tour of the area and got some nice shots of the new land, which occupies the former home of the Jaws attraction. You can check out their photos in this thread, be sure to look at all the pages as there are multiple sets of photos.
The Islands of Adventure station for the train that will connect the two Harry Potter themed lands has also made a ton of progress, with the facade of the structure being applied. It will have visitors exit the attraction extremely close to the Sinbad stunt show arena, which may make a bit of a jarring theme interruption - but I'm sure the park has a plan for that.
Over in Universal Studios Florida the actually Diagon Alley has all its buildings up with the outsides now being worked on. From the aerial shots it appears as though most of the land will take place indoors, with very narrow looking alleyways connecting them. There's also an interesting skybridge that has gone up over a part of the area - the purpose of which isn't exactly known at this point. With so much more to go before the area opens there will be tons of changes over the winter, when the real layers of detail will be applied.