Samsung has included a wide range of upgrades for the S Pen, some of which I found useful and others gimmicky. The most notable change is a faster 9ms response time, but there are plenty of other new features worth a look. The new S Pen gestures let you draw in the air to activate various shortcuts. For example, you can draw a right facing arrow to go back or a right arrow to open recent apps and a little rainbow to go Home. My favorite gestures is Screen Write, which enables you to capture a screenshot and start annotating it.
The 120Hz Infinity-O Display is fast, making pen strokes from the S Pen even more precise, so you can write naturally. Not only that, the S Pen is Bluetooth enabled so you can use it like a remote control for your phone.