The leaked render presents a Galaxy Note 9 that is practically identical to the 2017 model. Rumor has it that the only differences will be related to the SoC, battery and physical height. Apparently there is no new stylus and no in-display fingerprint tech either. Why fix it if it ain't broke? Looks like 2019 will be the year for new cutting edge designs.
https://www.notebookcheck.net/Samsung-Galaxy-Note-9-looks-almost-the-same-as-Note-8-in-leaked-marketing-render.303172.0.html