Apple's iOS 5 mobile operating system software has a new setting that allow you to tell your iPhone to blink its LED flash on incoming calls and alerts? Also there is a brand new AssistiveTouch section in Settings where you can control your multi-touch experience and even draw custom gestures. Plus, the four-finger pinch gesture that mimics the functionality of the home button?
"iOS 5 includes a few new moves and shortcuts to help you get around even quicker on your iPad: Using four or five fingers, swipe up to reveal the multitasking bar, pinch to return to the Home screen, and swipe left or right to switch between apps."
Apple, specifically, featured the home screen pinch twice in their iOS 5 promotional video: