We had mentioned that the leaked camera app changes the UI slightly, but this is really the big update of the app: you no longer have to use the awkward holding position to be able to tap the on-screen shutter button. This means, when you (or your significant other, or whomever) is taking a selfie, you don't have to hope your finger is positioned properly to hit the shutter button rather than the home button (on a device with soft keys of course). Instead, just tap either the volume up or down key and your photo will be taken.
About time, eh?
source: Droid Life