CNET says there might be a speaker on top of the Note 8 S-Pen?
https://www.cnet.com/products/samsung-galaxy-note-8-phone/preview/?ref=yfp
I also expect this next Note to give its digital stylus, which Samsung calls the S Pen, more tricks than last year's short-lived Note 7 (like a speaker in the pen top -- more below!).
https://www.cnet.com/products/samsung-galaxy-note-8-phone/preview/?ref=yfp