The unveiling of the iPhone 3G

At the unveiling of the iPhone 3G in San Francisco, a demo of Major League Baseball's At-Bat on the device showed real-time video highlights from a Yankees-Royals game. Many applications are expected to be free through Apple's App Store, although some games are expected to cost around $9.99.

So many developers were interested in the iPhone as a potential platform for their applications that Apple sold out its June Worldwide Developers Conference for the first time in its history.