The iPhone latest update

The tracking is off by default and can only be activated by downloading an app if and when one is developed and then you would have to activate the app. There is no update without it at this time. Do not worry about it.

Just so you know the tracking API is anonymous. Any cell phone, including yours can be tracked currently and not anonymously. I really don't see why there is such a response to the anonymous tracking to fight a deadly disease.