With only a few months before launch of iPhone 5S on the market, appear on the web several components of the device. The Home Button, which you have illustrated above compared to the iPhone 5 button is the same size but Apple has redesigned the way the component is connected to the motherboard. Although it is said that Apple is going to implement a fingerprint reader in iPhone 5S, it seems that it wouldn't be included in the Home Button.
The vibrator motor is presented together with the volume buttons and it seems that Apple will continue to use the same engine as the iPhone 5. The appearance of these components suggests that Apple partners begin to prepare for assembly.