By now we've seen most parts of the upcoming iPhone 5S, save for the thing assembled and operational. This last piece is the alleged motherboard in high-resolution visuals, courtesy of a so-called iHospital repair shop. Unfortunately we can't see processor stamping, or any other telling signs as to what will the specifications of the handset be, but it looks pretty, and there are PCB schematics thrown in for a good measure....
Source: http://www.phonearena.com/news/The-iPhone-5S-motherboard-shows-up-at-the-iHospital_id45665
Source: http://www.phonearena.com/news/The-iPhone-5S-motherboard-shows-up-at-the-iHospital_id45665