SAN FRANCISCO, CA - JUNE 08:  Craig Federighi, Apple senior vice president of Software Engineering, speaks about iOS 9 during Apple WWDC on June 8, 2015 in San Francisco, California. Apple annouced a new OS X, El Capitan, and  iOS 9 during the keynote at the annual developers conference that runs through June 12.  (Photo by Justin Sullivan/Getty Images)