The Force is with us. Well, the Force Touch trackpad that is.
Hinted at as far back as 2007, we finally have our hands on the Taptic Engine, which provides the haptic feedback for the Force Touch.
Confused? Let's break these ridiculous rhymes down. Haptic feedback is just a fancy way of saying that the trackpad will use vibration and pressure to let you know what's happening. "Taptic Engine" is Apple's term for the underlying electromagnet that makes it shake, rattle, and roll.
Tl;dr: Rumble Pak.