Apple's big plans for Siri expansion

Siri is expected to expand beyond the iPhone and iPad to third-party apps and Macs, a move designed to hike the usefulness and IQ of Apple's personal digital assistant. Analysts who cover Apple predict an expanded role for Siri will be one highlight of the Apple Worldwide Developers Conference, which begins Monday in San Francisco. Apple did not respond to a request for comment. The Cupertino, California company has a big job ahead. Even though Siri was first to bat among digital assistants, it has limited utility and risks putting Apple in second-tier status when it comes to the make-or-break technology of the moment: artificial intelligence and natural-language learning that can simulate human conversation.