iOS 5 will feature deeply integrated and advanced voice activation technology

At this year's WWDC, Apple will give developers a sneak peak at all of the new features it's planning to cook into iOS 5.

One rumor suggests that iOS 5 will feature deep integration of the voice activation technology Apple acquired when it purchased Siri in April 2010.

Source:
http://www.edibleapple.com/ios-5-will-feature-deeply-integrated-and-advanced-voice-activation-technology/