Tinhte has gotten their mitts on a 64GB white iPhone running a never-seen-before version of iOS 4. Seen in the video is a Expose-like feature to view open applications when the home button is double clicked along with a “Search this iPhone” option above the window previews. Also shown is Facebook integration, a File Sharing utility, and a different Folders interface. The device in question seems to be a prototype iPhone 4 rather than a next-gen iPhone 5, and this build of iOS (8A216) was likely scrapped some time ago. We may see a few of these features make their way into iOS 5.
Check out the videos to see if you can spot anything else!