watchOS 9 preview: A hearty upgrade for workout and sleep tracking

Apple may have the best smartwatch around, but there are still some areas where it lags the competition, particularly in exercise and sleep tracking. With watchOS 9, the company is bringing a robust slate of Workout updates, alongside new watch faces, redesigned apps and the ability to detect sleep zones. Now that the public beta is here, we can get a first look at whether the company can close those gaps. To install the watchOS beta, you'll need to have an Apple Watch Series 4 or newer, as well...