New Mini, new look. We lined up our new (gold) Mini 4 against our old (space gray) Mini 3, and flashbacked to our iPad Air 2 teardown. These are all the same changes!

The 6.1 mm thick iPad Mini 4 shaves 18% off the 7.5 mm Mini 3.

Many speaker holes are consolidated into fewer.

The dual rear-facing microphones move to surround the iSight camera, taking up the home of the now-defunct rotation lock slider.

And lastly, that uniform gold color hasn't changed, so your devices can still coordinate, for now (anyone remember the iPhone 5's sort-of blue color?)