Points in favor of realness: the photos aren't blurry; we've got multiple shots of the camera hardware; the photos match previous rumors about camera placement. Points against realness: they came from a radio show; and the iPod is totally destroyed.
A Portuguese retailer has let slip on two more cases designed for the fifth-gen iPod Nano, and third-gen iPod Touch—and camera placement perfectly matches the Chinese cases Cult of Mac spotted. Update: Pics pulled, cases "available September." Hmmm?