It appears 2016 is the year of the new connector, as this is the second time we've seen the new approach to the battery bridge.

These copper pads are for the positive and negative terminals of the battery.

Apple also seems to have included a connector that goes ... nowhere?

Could it be a diagnostic port? Circuits and firmware do need testing—although we have seen a fair amount of test points, which usually cut it.

We also find the modular headphone jack this time without microphone hangers-on. Here we thought these were a thing of the past.

Nearby we spot a water damage indicator sticker, waiting patiently for the day you spill iced tea on your Touch Bar and it can fulfill its purpose in life by turning pink.