Apple's annual Worldwide Developers Conference (WWDC) kicks off today at the Moscone West convention center in San Francisco, headlined by the traditional keynote address beginning at 10:00 AM Pacific Time / 1:00 PM Eastern Time. At the keynote, Apple is expected to provide an overview of its upcoming iOS 7 and OS X 10.9, as well as other announcements such as possible new hardware and a streaming music service. Apple will be providing a live video stream on its website for Mac and iOS users and via