The guys over at Mobile91 got their hands on 36-degree renders for the Note 9, and it looks like the rumors were spot on about virtually unchanged designs when compared to the Note 8. The front was already leaked by Ice Universe in May, but now we get to see the back and it it's almost the same, as well, with the small difference in the position of the fingerprint sensor.
https://www.notebookcheck.net/Samsung-Galaxy-Note-9-looks-90-the-same-as-Note-8-as-revealed-by-leaked-CAD-based-renders.308116.0.html