In its announcement, Apple writes:
Technology alone is not enough.Technology must intersect with the liberal arts and the humanities, to create new ideas and experiences that push society forward. This summer we bring together thousands of brilliant minds representing many diverse perspectives, passions, and talents to help us change the world.
To attend the event, you "must be a member of the Apple Developer Program or Apple Developer Enterprise Program," Apple writes. The event will feature guest speakers, "hands-on labs," consultations with Apple experts and more.
At 2016's WWDC, Apple announced its new operating system, iOS 10; its new MacOS, Sierra; its new WatchOS 3 and its new tvOS. It's safe to assume that the company will announce new operating systems for some of its products at the event in June.
Feb. 16, 2017, 9:35 a.m.: This story has been updated.