Caporegime
Right is portrait mode.
That looks like an interesting developmentAdobe has just added Lightroom a 'Lens Blur' tool into Lightroom but with much more control you get with the Apple 'Portrait' mode
You can adjust the blur amount and focal range (depth map) with a slider. See the areas of image you are changing as a mask and make refinements using an focus or blur brush.
It works really well, and could save spending more on wider aperture lenses and of course lugging around the added weight.
It's an early early access beta feature so will have more improvements into the future
Here is a comparison - [I deliberately over applied the amount of blur]