If you came along for our most recent podcast you heard us discussing some of the new features uncovered in the iOS 4.3 beta, including multitouch gestures for multitasking like four-finger swipes to go between apps. They seem hugely useful on an iPad but, on an iPhone, sounded like a bit of a handful. Now we have some video evidence, with Antoni Nygaard managing to get them working on his iPhone, along with the lock/mute switch toggle as well. Given these multitouch gestures aren't coming to the iPad(yet) we're guessing it won't be hitting the iPhone either, but we can always hope.
Update: BGR has a little more information on this, including some screenshots if the video below isn't good enough for ya.