After some rather spectacular leaks, the Apple Watch Series 4 is official. The new models represent the first big change in screen size since the smartwatch premiered in 2015, with 40mm and 44mm models packing larger displays (35 percent and 32 percent, respectively) that run much closer to the case edge. Even so, the bodies are thinner than before. The extra visual real estate provides more room for apps, and there's a new watch face that touts as many as eight (!) complications -- yes, that image you saw earlier was real. You'll also see a Mindfulness watch face as well as ones that interact with the edges of the screen.