Apple announces WWDC 2013 - CBS News Apple announced Wednesday the dates for its Worldwide Developers Conference. The annual five-day conference will be held from June 10 through June 14 in San Francisco. Tickets for the event cost $1,599 and go on sale April 25 at 10 a.m. Every year thousands of developers attend seminars and events lead by Apple engineers. The conference will highlight the latest operating systems for mobile devices and desktop computers. Developers who wish to attend must already be a member of the iOS Developer Program, iOS Developer Enterprise Program or the Mac Developer Program. Rumors surrounding the event include announcements for iOS 7 and a new iPhone. The tech giant released the iPhone 4S and iPhone 5 in the fall, but traditionally the smartphone has been unveiled in the summer.