Preface
The world has changed. Since work on this book began, the iPad was released (selling three million units in the first 80 days), and the iPhone OS was renamed to iOS, which debuted as iOS 4 in the new iPhone 4 (which was preordered by 600,000 people the first day). Meanwhile, more than 11,000 apps were released for the iPad—a mix of iPad-only apps and universal apps, which can run on both the iPhone and the iPad. By any measure, the iPad is a runaway hit. It is already inspiring many creative uses far beyond the sort of ultimate media-consumption device that Apple began touting it as back in January.
By the time this book goes to print and reaches your hands, Xcode 4 may be available (throwing a monkey-wrench into our careful descriptions ...
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