Quite a few of the 200 new features in iOS 5 are focused on accessibility, to "make it easier for people with mobility, hearing, vision, and cognitive disabilities to get the most from their iOS devices."
From MacRumors:
From MacRumors:
Apple has long been a front-runner with making their devices easy-to-use for their more challenged users.iOS 5 Allows You to Tap Out Custom Vibration Patterns