Apple will hold its annual Worldwide Developers Conference (WWDC) June 11 through June 15 at San Francisco's Moscone West.

At this year's five-day conference, Apple will outline the future of iOS and OS X, which will allow developers build new apps. WWDC will also feature more than 100 technical sessions presented by Apple engineers as well as the Apple Design Awards, a showcase of the most outstanding apps from the past year.

Tickets for the event were available at Apple Worldwide Developers Conference 2012 website (developer.apple.com/wwdc), priced at $1,599. However, the tickets have already sold out within a few hours from their release. All technical sessions will be also available atthe Apple Developer website (developer.apple.com/videos) as soon as they are posted for free.