The latest update to CC (version 19.1) was released today - containing various bug fixes. One thing you may not have noticed though is the "Select Subject" button that has been added in the Select and Mask workspace.
To see it open an image, and go to Select and Mask. If you have the top brush (quick select) enabled you will see the Select Subject button. It is not perfect but it is often worth a press as starting point from which to continue using Quick Select, Refine Edge etc