A guy who goes by the YouTube username of tzywen has just coded a PocketPC program that mimics the iPhone's interface. It's not a firmware, just a program running in fullscreen. The program utilizes the Eten M600 PocketPC's touchscreen to make it work just like an iPhone. Almost everything's in there too: the sliding lock, SMS, calendar... like I said, almost everything.

It also has the iPod feature, but tzywen says that it's still under development. Pretty much all you can do with it is scroll up and down. It can't play any songs yet, but it does prove that you can imitate the iPhone using just a PocketPC. In tzywen's own words, "It just depends on how far you're willing to go." Check out the vid below.