Concept Art
So far two full pieces of Toon Studios concept art have been leaked, plus one photo of a display of concept art/models for the land...
Concept Art #1
Released: 21st January 2005
This is the first Toon Studios concept art released, and immediately brought great disappointment to most fans, with it's bland layout, boring design and lack of excitement/magic. It became clear after some time (and upon seeing the following concept arts) though, that this was mainly an early layout design for the land and not a true indication of what it might actually be.
The concept art did give us a good idea of what kind of attractions to expect though, with a Finding Nemo dark ride, A Bug's Life dodgems, Flying Carpets integrated into the area and lots of character meeting locations.
Concept Art Photo
Released: 5th February 2005
This is a small photo taken at the Cast Members' New Attractions previews convention on 11th January 2005. The convention displayed a lot of concept art for the new attractions, some of it old, some new and some from other Disney parks with similar attractions to those planned.
This photo shows concept art for some kind of dark ride (perhaps Finding Nemo or even Buzz in DLP?) aswell as concept art for "Flik's Flyers" and more. It's hard to make out, but definately let fans see that there's much more to Toon Studios than the initial disappointing concept art.
Concept Art #2
Released: 11th February 2005
The third and final concept art released so far is by far the best of the lot, with a more traditional Imagineering concept art style and a clear sense of theme, colour and atmosphere. This concept art was showcased at The Walt Disney Company's AGM (Annual General Meeting).
The concept art shows not only the attractions of Toon Studios but also many enchancements to the existing Animation Courtyard. Paintbrushes, palettes, tubes of paint and more litter to area and colour the floor to bring it to life, with more greenery and trees aswell.
The actual Toon Studios area looks incredibly different to the original concept art, with very realistic themed areas for each attraction, all coexisting within a very small area and merging into each other accordingly. Large trees block most of the land from view in Animation Courtyard, and this design features a much larger showbuilding for the Finding Nemo ride (which also has an outside section here aswell). Also featured is a bumper cars ride themed to Pixar's 2006 film "Cars", set suitably in a grand-canyon-style area with the side of the Art Of Disney building disguised as a drive-in movie theatre. Further into the land are some trailers like the "Studio Catering Co." vans already in the park.
Missing in this concept art is the rumoured Incredibles themed area aswell as proper character meet and greet areas and the rumoured full new restaurant.
It is likely that none of the concept arts currently available represent the land truthfully, so it looks like we will simply have to wait for the official concept art unveiling before we can really judge the area and the impact it will have on Walt Disney Studios Park. It has been rumoured that concept art for all the new attractions will be released in May, but the likelyhood of this is very uncertain.
And that's it, the concept art in full!

Phew! I need a lie down...