This year’s big health feature could be what’s known as SPO2 tracking. This would allow the watch to measure your blood oxygen levels, like a pulse oximeter, and alert you if it dips below a certain threshold, according to 9to5Mac. This is good timing, because some doctors are recommending pulse oximeter devices to monitor COVID-19 symptoms, and people have begun purchasing pulse oximeters during the coronavirus pandemic. The April 30 leak corroborates this rumor as well… More here.
My experience with SP02 is varied depending on the tracker you use. My Garmin only ever gives 95% even when a pro monitor shows 98-99%. If Apple can crack this that would be a big boost (particularly with COVID-19 on everyone’s minds) and sleep tracking and a much better battery could put it over the top for many potential purchasers.