The temperature addition is long overdue, I think that something that is hugely beneficial and is just another great tool to add to the watch. I do question how accurate it will really be, being temperature checks in some respects, need to be completely accurate.
It shows the temperature around your wrist. It doesn't show 'core' temperature, and for healthcare issues, if someone thinks this will help them determine if they have COVID, you can 'have it', and not have a fever, or apparently run a high fever. The 'pulse ox' is a lot more diagnostic than a temperature probe. Especially one on an extremity. It's not almost useless, it pretty much IS useless... Measure with a chest band, or through the AirPods, or *something* closer to the core.