In advance of Apple’s official video demonstrating the iPhone OS 4 features, a user-submitted video posted to YouTube shows an iPhone 3GS calling up its multitasking functionality, as well as displaying Home screen wallpaper, neither feature previously available on Apple’s pocket devices.

iPhone OS 4 video shows new multitasking, wallpaper

Additional video is expected from Apple later today.

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Jeremy Horwitz

Jeremy Horwitz was the Editor-in-Chief at iLounge. He has written over 5,000 articles and reviews for the website and is one of the most respected members of the Apple media. Horwitz has been following Apple since the release of the original iPod in 2001. He was one of the first reviewers to receive a pre-release unit of the device, and his review helped put iLounge on the map as a go-to source for Apple news.