In case you missed it, earlier today at ShoWest, Disney announced (albeit quietly) a new motion picture being made for a release next fall. The movie will simply be called "Epcot", and will feature a "group of kids who stumble upon a lost area that encompasses the sea, space, automobiles, plants, the future, and the world."
Disney's press release notes the plot revolving around (as of now uncast) tweens who mysteriously stumble into what seems to be another dimension while on Spring Break with their widowed mother. One scene depicts a tween flying a spaceship to Mars to face off against an evil emperor (Dustin "Screech" Diamond"), and another sees a tween journeying deep into the sea to help find Nemo, in an unprecedented showing of live action actors interacting with Pixar familiars. The press release also notes that part of the climax of the film involves a tween growing a mile tall and using Spaceship Earth as a golf ball to attack the film's lead villain, who is rumored to be played by Eddie Murphy.
Disney also notes that other attractions from WDW will make appearances, although in a somewhat more "familiar" tone. For example, the kids will have to save their mother by going on a hair-raising limo ride, a la "Rock'n'Roller Coaster", though the film will remove any mention of Aerosmith and replace them with Miley Cyrus and the Jonas Brothers. "The Great Movie Ride" will also appear; but instead of journeying across the great cinematic achievements of all time, the kids will be reliving scenes from "High School Musical" and "Camp Rock".
"Epcot - The Movie" is scheduled to appear in theaters in RealD 3D Fall '10.