Apple has added some additional gestures for the iPad. For example, you can now bring up the multitasking bar by simply swiping the screen upward, or swipe left and right to jump from app to app. Here it is as detailed by Apple:
Test Multi-Touch Gestures for iPad
This beta release contains a preview of new Multi-Touch gestures for iPad. 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. We are providing this preview before releasing them to the public to understand how these gestures work with your apps. Test them and give us your feedback on the Apple Developer Forums
These are really interesting, as they would allow Apple to get rid of the home button in the next iPad. Unfortunately, for some reason, I haven’t been able to figure out how to activate these. We’ll be investigating.