Apple corroborating with nine automakers on new Eyes Free interface for in-car control of Siri voice-guided assistant.

At its Worldwide Developer's Conference (WWDC) keynote on Monday, Apple revealed a new in-car voice-control system dubbed Eyes Free. It involves a dedicated shortcut button on the steering wheel that will access an iPhone 4S or iPad's Siri voice control feature without the user having to fumble around for and with the phone. The iPad will get Siri for the first time as well when iOS 6, the latest version of Apple's mobile operating system, arrives this fall.

Carmakers that partnered with Apple include Audi, BMW, Chrysler, GM, Honda, Jaguar, Land Rover, Mercedes-Benz, and Toyota. Ford is conspicuously absent as it has Microsoft as a partner for its high-end Sync-branded in-car entertainment systems.

Siri, the voice-guided assistant, will get an update with iOS6. It will also deliver sports and movie information, send Tweets and launch apps. It can also launch a Maps function with turn-by-turn driving directions.

The in-car feature is expected to begin showing up in cars within the next 12 months.