
Xbox 360 exclusive download Dead Rising 2: Case 0 was slated for download release on August 31. It won't be making that date in Japan.
In an official statement, Capcom's Japanese headquarters has stated that the game is going to be delayed. The reason for the delay is elements were discovered in the trial version that are not appropriate for a free demo.
The game has been delayed so that these issues can be rectified. Capcom has not explicitly stated what exactly needs to be corrected. The company also did not provide a new release date for the game.
Kotaku has contacted Capcom to determine whether this will impact the game's Western release.
Priced at 400 Microsoft Points, prologue Dead Rising 2: Case 0 is set between Dead Rising and Dead Rising 2 and fills in the gaps between the two games.

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Retail game Dead Rising 2 will be out in late September.
Xbox 360『デッドライジング2:CASE 0』が配信延期 [ファミ通.com]
DISCUSSION
I like how they admitted here that it is just a demo...THAT THEY ARE CHARGING YOU FOR! Wise up people, this is Capcom we are dealing with.