Vietnamese site Tinhte might just have gotten their hands on an official white iPhone 4 from Apple... running a previously unseen version of iOS! While it could also just be a clever set of Jailbreak tweaks, the video shows a new version of the multitasking fast app switching that replaces the dock icons in iOS 4 with miniature tiles of the actual apps, sort of like Exposé for iPhone.
Whether this is something destined for an interim iOS 4.4, our first hint at iOS 5, or some Jailbreak wizardry only Apple knows for sure. But it is interesting that it shows up on the anniversary of the Gizmodo iPhone 4 leak, isn't it?
UPDATE: Per comments, yes there are some old icons but also some Apple internal test icons. Weird. Second video from the same source that shows off, among other things, 64GB, a new rendering for Folders, and Facebook built into settings.
UPDATE 2: This might just be a prototype iPhone 4 running an early test version of iOS 4 which included Folder and Fast App Switching UI Apple later decided against implementing (going with what we see now in the release version of iOS 4.)
Check out the video after the break and let us know, real, fake, or really fake? And if real, what do you think?