iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple's 'Health' App Gains Ability to Track Steps With M7 Motion Coprocessor in New iOS 8 Beta
Available in newer devices like the iPhone 5s, the iPad Air, and the Retina iPad mini, the M7 "motion coprocessor" functions alongside the A7 chip in those devices, measuring accelerometer, gyroscope, and compass data for enhanced fitness tracking capabilities.
As noted by 9to5Mac the Health app's "Steps" section now tallies the number of steps a user has taken as measured by the iPhone 5s. Users accessing the Health app today will be able to access a full week's worth of data on their devices.
The M7 has been leveraged by several third-party app developers, such as Nike and Strava, but this is the first time the data has been made available directly via Apple's own Health app and it is also the first real data the Health app is able to display.
Along with M7 integration, the Health app also has a new "Caffeine" section in the Nutrition portion of the Health Data tab. This appears to track how much caffeine is consumed and will likely integrate with third-party caffeine tracking apps such as UP Coffee from Jawbone, which lets users track the amount of coffee, tea, and other caffeinated beverages that are consumed on a daily basis.
At the current point in time, the Health app is rather limited, but by the time iOS 8 is released, dozens of device manufacturers and app developers will likely have built HealthKit into their apps, allowing the Health app to aggregate data from multiple sources into one easy-to-access spot. Health is also rumored to be heavily tied to Apple's upcoming health-tracking wearable device, the iWatch.
As described by Apple, Health aims to be a one-stop dashboard for health and fitness data, tracking metrics measured by various devices and apps, including heart rate, food consumed, cholesterol, sleep quality, and more. Apple's iOS 8 Health page says "It might just be the beginning of a health revolution."
iOS 8 is currently available only to registered developers and will likely be released to the public in the fall, after several more beta iterations to refine the look and feel of the operating system.