The Apple Pencil Pro, recently launched by Apple, has impressed users with its attention to detail and user interface (UI) enhancements. One notable feature discovered by Quinn Nelson is the addition of a digital Pencil shadow in iPadOS. When users hover the Pencil Pro over the iPad Pro, they can see a shadow of the tool they're using. This small UI touch replicates the experience of using a physical pen and paper, contributing to Apple's goal of presenting the iPad as a creative tool that can replace traditional instruments [e082c775].