I don't know whether it is new or not, but Apple has patented it.
It is one of the patents Apple has been pummeling Samsung with in Europe, since they implemented spring-back scrolling in a few places. I remember the photo gallery, but I think there might have been another patent involved there. This patent is also the reason that stock Android (and most non-Samsung skins, I believe) flash a light when you hit a scrolling boundary instead of springing back.
Twitter presumably has some sort of license (via the iOS SDK or whatever) to use spring-back scrolling in the iOS Twitter app. However, there is also spring-back scrolling in the Android Twitter app. I wonder if Twitter has a license for that or if Apple is merely letting it go because of their current friendly relations.
It is one of the patents Apple has been pummeling Samsung with in Europe, since they implemented spring-back scrolling in a few places. I remember the photo gallery, but I think there might have been another patent involved there. This patent is also the reason that stock Android (and most non-Samsung skins, I believe) flash a light when you hit a scrolling boundary instead of springing back.
Twitter presumably has some sort of license (via the iOS SDK or whatever) to use spring-back scrolling in the iOS Twitter app. However, there is also spring-back scrolling in the Android Twitter app. I wonder if Twitter has a license for that or if Apple is merely letting it go because of their current friendly relations.