Other than the screenshot they have posted, they don't give details as to how this appeared on the iPhone (how it is activated) or if this functionality actually works. But still, I thought it would be of interest.
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. Now, there are a couple of obvious red flags here -- using "four or five fingers" sounds pretty unreasonable for a 3.5-inch display, though it'd certainly tie in with recent rumors that Apple's turning sour on the physical Home button and might indicate that the complete redesign we're hearing about could include a slightly larger display. Of course, it could also indicate that this is really early software with the wrong (read: iPad) wording -- but at any rate, we could definitely see the benefit of, say, a two-finger gesture to swipe between apps.
More...
http://www.engadget.com/2011/01/19/iphone-rumor-two-pack-multitasking-gestures-and-mobileme-photo/

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. Now, there are a couple of obvious red flags here -- using "four or five fingers" sounds pretty unreasonable for a 3.5-inch display, though it'd certainly tie in with recent rumors that Apple's turning sour on the physical Home button and might indicate that the complete redesign we're hearing about could include a slightly larger display. Of course, it could also indicate that this is really early software with the wrong (read: iPad) wording -- but at any rate, we could definitely see the benefit of, say, a two-finger gesture to swipe between apps.
More...
http://www.engadget.com/2011/01/19/iphone-rumor-two-pack-multitasking-gestures-and-mobileme-photo/