The iPad also gains some multitouch multitaskinggestures, which are pretty interesting, actually: you can use four or five fingers to pinch to the home screen, swipe up to reveal the multitasking bar, and swipe left or right between apps.
Looks like the iPad might not have an exclusive on those new "multitasking" gestures unearthed in the latest iOS 4.3 beta, because BGR's got some shots up of an purported internal build that seem to indicate Cupertino intends to push them down to the iPhone line as well.