Apple has announced the date for this year’s WWDC: June 11 through June 15. It once again returns to the Moscone West facility in San Francisco. Tickets cost $1,599. You need to be a registered iOS or Mac OS developer in order to attend.

Apple has planned more than 100 technical sessions, and will offer attendees 100 hands-on labs staffed by Apple engineers. Other events include the Apple Design Awards, which recognize iOS and Mac apps, lunchtime sessions and more.

In a statement, Apple’s senior vice president of Worldwide Marketing explained that this year’s WWDC would focus on both iOS and OS X Mountain Lion, the newest version of the Mac operating system that will be released later this year. “The iOS platform has created an entirely new industry with fantastic opportunities for developers across the country and around the world,” said Schiller.

One change from last year that may stop some developers at larger companies from attending the show: Apple is restricting the sale of tickets to one per person and five per organization.