Apps will look terrible unless they are updated for the iPhone Duo

Apple has produced a series of videos for developers showing how their apps will look on the iPhone Duo, and without modification, they could look really ugly.
How an app will look on the iPhone Duo's internal screen if it hasn't recently been updated - image credit: Apple.
As it always has, Apple has encouraged developers to use its latest Xcode development tools without quite telling them why things were changing. Consequently, it now says that if developers have worked to the current Xcode 27