Monday will give iPhone owners their first look at the big changes coming to their smartphones this fall.

Apple will virtually host its Worldwide Developers Conference this week, starting with a keynote address Monday where they are widely expected to unveil iOS 16, the latest software for its iPhones.

The keynote will likely also serve as a platform for sharing software updates related to their other products as well, including iPads, MacBooks and the Apple Watch.

USA TODAY will provide live updates on what's coming to iOS 16 throughout the keynote, which starts at 1 p.m. ET.

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Track medications on Apple Watch

The watch will soon add a Medications app to easily track which medications you take and when to take them. Users can manually add them or take a picture to quickly add to the app. Users can also set schedules to know when to take their medications. The app will provide alerts if your medications have critical or serious interactions.

Improvements to Apple Watch Sleep app

The next watch update will include support for sleep stages, checking how much time you spent in specific sleep stages, such as REM sleep. If you own a Fitbit, then you're likely aware of how it works.

For heart health, WatchOS 9 is adding AFib history, which provides long-term tracking of when users are in atrial fibrillation.

It's time for Apple Watch updates

Let's start with faces. Apple is adding four more faces, including a lunar calendar face, the play time face with animated numbers and a metropolitan face in various colors. Faces will also add new complications, which are essentially super small widgets with info such as dates or heart rate.

As for fitness, WatchOS will leverage tools like machine learning to better track running during workouts, with details such as stride and ground contact time. Users can also quickly see which heart rate zone they're in during a workout.