Jobs takes the stage

CUPERTINO, Calif.--Apple CEO Steve Jobs takes the stage at a media event Thursday morning to announce some key features in iPhone OS 4.0, which he says will be released this summer. The upgrades include multitasking, background audio, background location, voice over IP, a new folders feature, and the new iAd mobile advertising platform.

Meanwhile, new models of the iPhone and iPod Touch will be out this summer. And the newly released iPad will get OS 4.0 in the fall.

Click here for a full summary of developments from Thursday's event.