Follow up to my previous post. It’s not a new sound, iOS is now using the sound that is set as the Default Sound to alert you to critical alerts.
If this isn’t a bug, it’s a terrible decision. Medication follow up alerts need to actually get your attention like the old sound did.
I have a hearing deficit at higher frequency ranges. I can’t hear many smoke detectors, for example, and the current critical alert sound on the iPhone just sounds like rhythmic clicking to me. So being able to choose a sound that’s actually audible to me is appreciated. But the high pitched sound should be the default, to be sure.