A huge update with new interface, bones mode and a couple of new tools.
Bones became a mode, so there are two of them now: by points (bones) and drawing (the usual one). The new mode is said to be working great with precise forms.
Polybrush 1.5 also has a couple of new tools:
Users of older versions get this update for free. Or you can try a free version for 90 days and then buy Polybrush for $20 per year.