CUPERTINO, CALIFORNIA Apple today previewed watchOS 9, which brings new features and enhanced experiences to the world’s leading wearable operating system. Apple Watch users will now have more watch faces to choose from, with richer complications that provide more information and opportunity for personalization. In the updated Workout app, advanced metrics, views, and training experiences inspired by high-performing athletes help users take their workouts to the next level. watchOS 9 brings sleep stages to the Sleep app, and a new FDA-cleared AFib History feature provides deeper insights into a user’s condition. The new Medications app makes it easy for users to conveniently and discreetly manage, understand, and track medications.

“Users around the world love Apple Watch for helping them stay connected to those they love, be more active throughout the day, and better manage their health,” said Jeff Williams, Apple’s chief operating officer. “This fall, watchOS 9 takes the Apple Watch experience to the next level with scientifically validated insights across fitness, sleep, and heart health, while providing users more creative ways to make their Apple Watch their own.”

The Apple Watch experience starts with watch faces, which give users the opportunity to express personal style while connecting them to relevant information at a glance through complications. watchOS 9 introduces four new faces: Lunar, which depicts the relationship between the Gregorian calendar and lunar calendar, used in many cultures such as Chinese, Islamic, and Hebrew; Playtime, a dynamic piece of art that’s unique to Apple Watch and created in collaboration with artist Joi Fulton; Metropolitan, a classic, type-driven watch face where the style changes as the Digital Crown is rotated; and Astronomy, an original face that has been completely remastered and features a new star map and current cloud data.

watchOS 9 introduces enhanced and modernized complications on some of the most classic watch faces, such as Utility, Simple, and Activity Analog, along with background color editing for Modular, Modular Compact, and X-Large for additional personalization. The new Portraits face showcases the depth effect on more photos, including cats, dogs, and landscapes, while Chinese scripts have been added as options for California and Typograph watch faces. Focus now allows users to select an Apple Watch face to automatically appear when they start a specific Focus on iPhone, such as the Photos face during a Personal Focus, helping users stay in the moment.

The Workout app, one of the most popular apps on Apple Watch, has been updated to provide richer metrics for measuring performance, as well as new training experiences to help users reach fitness goals. The familiar in-session display now uses the Digital Crown to rotate between easy-to-read Workout Views, so users can see important metrics for different training styles. Heart Rate Zones, which can be manually created or automatically calculated using personalized Health data, can be used to monitor the intensity of a workout. Interval training is an important part of any training plan, and in watchOS 9, the Workout app introduces Custom Workouts, which can be used to create a structured workout that can include work and rest intervals. New alerts, including pace, power, heart rate, and cadence, can be added to guide users throughout the workout.

For triathletes, the Workout app now supports a new Multisport workout type that automatically switches between any sequence of swimming, biking, and running workouts, using motion sensors to recognize movement patterns. When each workout is complete, a redesigned summary page in the Fitness app offers additional details with interactive charts for more precise analysis.