Watch OS 4 coming to Apple Watch tomorrow

Apple Watch users get a free update tomorrow as Apple Watch OS 4 ships to existing users. The update focuses on improved activity tracking and motivation to help users 'close their circles' which is how Apple measures activity and fitness. Those who push harder are rewarded with various celebratory graphics and sign

Workout settings are more detailed and can be tailored to specific needs. There now require fewer button presses to get workouts started. Music playback on the Watch has also been significantly improved, this is ideal for runners who don't like bringing their iPhone along and have a Watch and wireless headphones.

A new Siri watch face makes notifications and calendar events more effective by having them come up closer to the time. Stay tuned for our initial impressions of Watch OS 4.