Additionally, come watchOS 4, Apple's wearable will feature a variety of additional Watch faces to choose from, including a new Kaleidoscope watch face - featuring a series of Digital Crown-controlled special effects, as well as new Disney character faces including Toy Story's Woody, Buzz Lightyear, and Jesse for your customization pleasure.
In case you're into triathlons, pentathlon, or even decathlons, watchOS 4 will let you easily switch between different sports tracking by simply swiping over the activity app's home screen. Fitness maniacs will now be able to track HIIT (High-intensity interval training) as they please. In addition, Apple has partnered with several fitness equipment manufacturers to enable two-way real-time data exchange between the Apple Watch and gym equipment.
The watchOS 4 operating system now offers more personalised workout goals using new Activity and Workout apps. Music also has a new look.
The developer preview is now available, and will be freely available to all in the Autumn.
Health will also be a priority; particularly following recent sightings of Tim Cook sporting a prototype Apple Watch with a blood sugar tracker, and similar reports suggesting the company was looking to sell a glucose sensor to help those with diabetes.
The new software could bring some new, more elaborate watch faces, as well as the ability to set the watch face to always display the time.
Chief among the new features are a trove of new watch faces, with the most intriguing one being the intelligent Siri one.
Overall, the updates that Apple has shown off so far are not almost as dramatic of a change as watchOS 3 was, but will pinpoint specific areas to improve the user experience. Users can now play multiple playlists that can be synced with Apple Music's recommended playlist too.
On the backend, Watch OS 4 gets more support for apps in the background, better responsiveness and core Bluetooth.
Plus, WatchOS 4 introduces a mode called "Gym Connect", which allows you to sync directly with gym equipment like treadmills and ellipticals.