Of course, the iPhone 5S screw holes didn't line up with the logic board from the iPhone 5. Also the SIM card tray position didn't line up with the opening on the iPhone 5S.
It appears as though the logic board will be moved slightly to the right indicating that while the iPhone 5S will have a more powerful processor it will come in a slimmed down form factor. Notably, this leaves more room for the battery on the left.
Take a look at the video below and please follow iClarified on Twitter, Facebook, Google+, or RSS for more.
Apple is expected to unveil the gold iPhone 5S on September 10th.