I have no affiliation to Apple but I do really like my watch series 6 for tracking my heart rate, this new capability sound excellent (source apple website press release)
First-of-Its-Kind AFib History
Currently, the ECG app and irregular rhythm notification on Apple Watch can identify potential signs of atrial fibrillation (AFib). Left untreated, AFib is one of the leading conditions that can result in stroke.
Research suggests that the amount of time spent in AFib may impact a person’s symptoms, overall quality of life, and risk of complications. Previously, there has not been an easy way to track the frequency of AFib over an extended period of time, or to manage lifestyle factors that may influence one’s condition. According to the American Heart Association, addressing modifiable lifestyle factors may decrease the amount of time spent in AFib.1
With watchOS 9, users who are diagnosed with AFib can turn on the FDA-cleared AFib History feature2 and access important information, including an estimate of how frequently a user’s heart rhythm shows signs of AFib, providing deeper insights into their condition. Users will also receive weekly notifications to understand frequency and view a detailed history in the Health app, including lifestyle factors that may influence AFib, like sleep, alcohol consumption, and exercise.
Users can download a PDF with a detailed history of their AFib and lifestyle factors, which can easily be shared with doctors and care providers for more informed conversations.
There is also a medicine tracker ( source apple website press release)
The new Medications experience on Apple Watch and iPhone helps users manage and track their medications, vitamins, and supplements, allowing them to create a medications list, set up schedules and reminders, and view information on their medications in the Health app. The Medications app on Apple Watch makes it easy for users to conveniently and discreetly track medications anytime, anywhere.
Custom schedules can be created for each medication, whether it needs to be taken multiple times a day, once a week, or as needed, and users can set up reminders to help keep them on track. In the US, users can receive an alert if there are potential critical interactions with medications they have added to the Health app.3