iPhone Duo: Give Your Camera Subject a Picture Preview

Getting someone to relax in front of a camera is a lot easier when they can see how they look. Apple acknowledges this on its new foldable iPhone Duo with a feature called Duo Preview, which shows a live preview on the outer display. This way, whoever you're photographing can adjust their pose, fix their hair, or straighten their costume…

Summary from the MacRumors feed. The full story lives on their site.