Abbott Labs have got halfway there with the Libre, but geez, talk about expensive! $180 or so for the initial setup and scanner, and $92 per, for the sensor. I'm sure those of us on pensions and being insulin dependent would get some kind of discount but at those prices I cant see it being very much. And no connection to Apple watch or phone as far as I can tell.
My best option at the moment is the Accu-chek Aviva Connect which sends by BT to the phone and that then ends up in Apple Health. Strips work out cheaper too.