Japanese iPhone repair company iLab Factory has leaked images of what is purportedly a complete chassis of the next-generation iPhone, which may give us the best picture of Apple’s much-awaited smartphone.

Photo credit: iLab Factory

According to the site, the iPhone was assembled from individual parts that were acquired from Apple’s supply chain in China. However, the assembled chassis noticeably excluded the vast majority of critical internal components: no touchscreen, logic board, cameras nor batteries.

Still, the pictures line up cleanly with the previous leaks of various iPhone components. We see the stretched-out form factor that could accommodate a 4-inch screen; the two-tone, mostly aluminum back; the smaller 19-pin dock connector that replaces the current 30-pin unit; as well as the larger speaker grills and relocated speaker jack alongside the dock connector at the bottom.

However, there was no evidence of the nano-SIM card tray that the new iPhone was supposed to be equipped with.

Also in evidence was a thinner front unit that could hint at the rumored in-cell display technology that would enable Apple’s engineers to further slim down the smartphone. iLab Factory didn’t give exact measurements, but it emphasized that the device is palpably thinner than the current model.

The next-generation iPhone – often referred to as the iPhone 5, despite being the sixth generation Apple smartphone – is expected to arrive in October at the latest.

However, there are increasing rumblings of September availability for the new device. It’s been argued that the earlier release window would help shore up Apple’s sales and revenue before its fiscal year ends in late September.