Apple will have an extensive voice recognition service in a future version of iOS called 'Assistant'



From MacRumors:

This new "Assistant" feature in iOS 5 is claimed to take voice input along with other user-specific information, such as location and contacts, to provide a powerful service to the user:

We can imagine a user asking their iPhone “Assistant” to setup a movie with one of their friends. The user might say “setup movie with Mark” and based on Mark’s contact info and the user’s location data, will be able to offer tickets to a local theater and send Mark the information.

  Apple's Voice-Powered Virtual "Assistant" Coming to iOS