The purported rear camera part was revealed on Saturday by Apple.pro (via Google Translate). The site obtained pictures that claim to show both the forward- and rear-facing cameras on Apple's fifth-generation iPhone.
The alleged iPhone rear camera does not have an accompanying LED flash to its right, as the part does on the current iPhone 4. That would lend support to an alleged fifth-generation iPhone case that surfaced earlier Saturday, showing a camera flash on the far right of the rear of the new iPhone.
That case from an overseas third-party accessory maker also included a mockup that showed a larger edge-to-edge display. Various rumors have suggested that the next iPhone will sport a larger screen, though the footprint of the device will stay the same.
The picture sent to Apple.pro was allegedly sent by a tipster from California named "Steven." Referencing keynotes given by Apple Chief Executive Steve Jobs, the source reportedly suggested they would soon have "one more thing" to share on the next iPhone.
The same site has been the source of numerous Apple-related hardware leaks in the past, including the tiny touchscreen that last year became the centerpiece of the new iPod nano. Earlier this week, the site showed photos that suggest Apple could add a camera to its seventh-generation multi-touch iPod nano.
As for iPhone-related rumors, in February the site claimed that Apple was evaluating three new smartphone prototypes for potential release in the future. One of those models was said to include a physical slide-out keyboard, though it was not known whether the company actually intended to bring such a product to market.