Playing Thunderstruck by AC/DC, Microsoft introduced the Surface Pro 4. This device works with a hybrid cooling system, a 12.3-inch display, and a fingerprint sensor. Microsoft suggested this morning that the device works with 1024 levels of pressure for the Surface's stylus, and that the device's keyboards have "better spacing." The cover - the keyboard cover, the non-keyboard cover - is also thinner. At 8.4mm thin, this is what Microsoft's Panos Panay suggests is the "thinnest most powerful Surface yet." With an Intel 6th Gen processor inside, we're inclined to agree.