Apple on Monday kicked off its Worldwide Developers Conference with the biggest-ever release of its iOS mobile operating system.

CEO Tim Cook called iOS 10, coming this fall, “gigantic” and “the mother of all releases.”

Among the new offerings in the upcoming version of iOS are more features in Messaging, all new designs for News, Music and Photos, and increased opportunities for developers to integrate their apps with Siri, Maps and Messages.

“Long term, the most interesting thing is the fact that Apple opened up Siri and Messaging and Maps to developers to add to those services,” said conference attendee Bob O’Donnell, chief analyst at Technalysis Research.

“It reflects the way the world is moving. It’s moving away from standalone apps and into integration with services,” he told TechNewsWorld. “Apple is acknowledging that by opening these things up for other developers to provide add-on functionality for these services.”

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The new iOS enhances the user experience at the lock screen and home screen with rich notifications, as well as interaction with apps through the expanded use of 3D touch.