Game Informer is a long-running, monthly video game magazine. On October 12th, they published their monthly issue (#199) with information about Epic Mickey as their cover story.
Epic Mickey Issue Contents
The issues had a Skate 3 first-look, an in-depth, seven-page report on the relationship between Hollywood and video games, interviews with executives from all three console manufacturers about the future and current success of their products. But the issue of Game Informer's biggest attraction was the in depth coverage of Epic Mickey, from Warren Spector. Which also included his info on his Disney memorabilia collection that he had collected over previous years.
Game Informer Demo
To reveal the first screenshots and information of Epic Mickey to the public, a short demo was created by Junction Point Studios. The demo was made to show off key gameplay mechanics and the preliminary art style. According to lead designer, Chase Jones, the demo was created because no actual levels had been completed yet. This demo included many elements that didn't make it into the final game, such as characters, plot points and the hero/scrapper mechanic.
Though some additional information about the demo has been made public over the years thanks to datamining and input from the game's developers, no gameplay footage is known to publically exist.
Game Informer also published various videos and articles about Epic Mickey on their official website.
October 12th Sketching Mickey: The Time Lapse Video
October 15th The Art of Epic Mickey [http://gameinformer.com/games/disney_epic_mickey/b/wii/archive/2009/10/24/An-Interview-With-Warren-Spector.aspx In His Own Words: A Profile of Game Creator Warren Spector Junction Point: A Studio Profile]
October 19th Inside the Game: An In-Depth Look at Epic Mickey's Art and Animation
October 23rd An Interview with Warren Spector
October 26th Anatomy of a Screenshot
October 28th Audio Tour with Warren Spector