The Samsung Galaxy S8 received its Oreo beta weeks ago, so it's a bit surprising that Note 8 users have been left in the lurch. Only until now, though, as what looks like a stable internal Oreo build for the flagship has finally surfaced, with users testing it out and confirming its validity.
https://www.notebookcheck.net/Oreo-for-the-Samsung-Galaxy-Note-8-leaked.269622.0.html