https://www.techradar.com/news/firmware-reveals-more-details-about-how-the-note-9-s-pen-will-work

It's been a weekend of Samsung-related leaks and rumors – see also news of a fresh color for the Note 9 and a wireless charging pad that's on the way – and to round everything off we've got some updates on the upgraded S Pen that's going to come with the Note 9.

The fine folks at XDA Developers have been digging into the firmware for the upcoming Galaxy Tab S4 tablet, and have found some hints about the new S Pen and what the stylus is going to be able to do. Previous rumors have suggested that the S Pen will be the standout feature of the Note 9 and will probably come in bright yellow too.