A few images have surfaced showing what is allegedly the iPhone 8's metal frame. The images feature an iPhone 6 case for size-comparison purposes. The frame doesn't tell much about the upcoming phone but it gives us an idea of its footprint. Typically the frame would be filled with all the different components of the phone. iPhone 8 frame next to an iPhone 6 case Come fall Apple is expected to announce 3 new iPhones - the iPhone 7s and 7s Plus with the same 4.7" and 5.5" screen sizes and LCD display tech and an iPhone 8 with an elongated OLED display of 5.8"...
Source: http://www.gsmarena.com/metal_frame_linked_to_iphone_8_pictured-news-25550.php