Macpost claims they exclusively received meatier images of iPhone 5 back cover in White, along with Volume flex cable, frontal camera, rear camera Lens, Vibrator and battery from a Chinese part supplier Truemaxcn. “The codename (N94) marked on cover clearly indicates that it is a fifth-generation iPhone part. The front cover, however, is labeled “EVT2″ (Engineering Verification Testing) with date 07-June-2011, marking it as early development prototype.”

The codename (N94) has been discovered by 9to5mac a view months ago in iOS 5 SDK suggesting that these are internal code names for two unreleased iPhone models.

They also found other hardware items such as, Audio Flex, Battery etc. These parts can be found on their website.

Source [MacPost]