Some Pixel Watch users now have access to Irregular Heart Rhythm Notifications

Although Google's Pixel Watch utilizes the Fitbit app for various health and fitness tracking features, it doesn't support all the features available on Fitbit's own lineup of trackers. For instance, the watch lacks SpO2 tracking, high/low heart alert notifications, skin temperature variation, and irregular heart rhythm notifications. However, one of these features recently appeared for some Pixel Watch users, even though it's not officially supported.