One thing to note is that the glass is curved/tapered towards the bottom, suggesting that the iPhone 6 will indeed have rounded corners. Bloomberg was the first to report that Apple's next iPhone would launch with displays that curved downward in both 4.7-inch and 5.5-inch sizes.
The leaked panels also shows the white front panel camera hole above the earpiece, similar to the iPhone 5/5s, however the black panel has the camera hole to the left of the earpiece similar to the iPhone 4/4s. One of the holes could also be for a proximity sensor of some sort.
Today another report claimed that the leaks we have seen only offer a 'rough' idea of what the iPhone 6 will look like. It went on to claim that the final design has a curved display near the edges creating a seamless transition from the aluminum to the display as well as modified antenna breaks on the rear casing
The iPhone 6 is expected to be unveiled this fall with in both 4.7-inch and 5.5-inch screen sizes, however the 5.5-inch model may receive exclusive features such as optical image stabilization and 128GB of storage. The device is rumored to feature a 1704 x 960 resolution display, A8 processor, an improved camera, 802.11ac Wi-Fi and more.