Look at it this way
1st gen Urine strips
2nd gen Glucose meters and blood test strips
3rd gen CGM Libre, Enlite etc
4th gen ???
Apple has filed for patents and so have numerous other companies, there was a light sensing one developed in Israel a number of years, but nothing seems to have come from that one. Until Patient trials are in full swing don't pay much attention to what is coming. Still waiting on that cure and one hits the news of the tabloids every year or so, technically a cure will negate the need for an awesome CGM. My definition of cure is you receive a treatment and that is the end of it, no medication required. Some have had transplants, but that comes with another set of problems and challenges.