ZBrush 4r7 Feature: Dynamic Subdivisions
http://www.zbrushworkshops.com
Dynamic Subdivision might seem like a small little feature but it bridges the gap between nurbs level smoothing that you see in programs like Fusion360 and the polygon modeling toolset that is at the heart of ZBrush.
When working on man made objects, whew, this little feature adds alot of realism to the designing process!
Hope you enjoy. Happy ZBrushing!