The Galaxy S21 Ultra already supports an S Pen, one of the main features that separated the Galaxy S and Galaxy Note lines. According to reports, Samsung is seeking to take S Pen support further with the Galaxy S22 Ultra, while borrowing design cues from the Galaxy Note series, too.
https://www.notebookcheck.net/Samsung-Galaxy-S22-Ultra-to-borrow-two-major-design-elements-from-the-Galaxy-Note-series.563776.0.html