The folks over at iFixit have finally gotten their hands on an iPhone 5S, and instead of using it, they tore it down.
The found Apple's proprietary pentalobe screws, a cable that connects the new Touch ID sensor and the new 8.8 megapixel camera. Check it out below:
The rest of the innards are similar. The 5S has a slightly bigger battery and the new A7 chip.