Apple will kick off its developer conference with a keynote, where executives will unveil the newest versions of iOS and OS X, and possibly new hardware. The keynote will start at 10 a.m. PT (1 p.m. ET) on the first day of the Worldwide Developers Conference (WWDC), June 2, Apple said in a revised online schedule.

Apple will preview iOS 8 and OS X 10.10 at WWDC, give pre-release code iOS to developers at the conference, then launch the new operating systems in the fall.

Apple has also used to introduce new hardware in the past events. For this year, most pundits expect a refresh of the MacBook Air with Retina-quality screens, and also a new Apple TV.