While the Apple Pencil is quite new, there are some improvements that Apple could implement for a new version. A patent filing uncovers some features that didn’t make their way into the Apple Pencil, which leaves some wiggle room for future additions.
The patent mentions features like removable tips that would allow users to replace the pencil end with brushes or felt tip pens. Not only would these look and feel different, but they could enable different interactions depending on the tip you’re using.
It also details a sensor on the non-writing end that could function as an eraser. This is something that people expected on the released Pencil, so it would make sense for it to be added, allowing it to live up to the Pencil name.
There are also mentions of a built-in Touch ID sensor so that others can’t use your Pencil and a real lead tip, which could draw on paper and have it replicated as a digital image.
Just because these elements are mentioned in a patent doesn’t mean that they will be implemented down the line. However, it is likely that Apple will release an updated version of the Pencil and some of these features seem like worthy additions.