Photos: iPhone gets down to business

"I'm here to tell you about how developers can build great applications for the iPhone," says Scott Forstall, vice president of iPhone software, who also took the stage in Cupertino, Calif. "Starting today, we're opening up the same native APIs and tools that we use internally to build all our iPhone applications."

Forstall went on to talk about the iPhone's Core OS.

Photo by Corinne Schulze/CNET Networks