11-10-2018 09:43 AM
This is the response I got from support chat.
"Greetings, Thank you for posting your question on Samsung Expert Network. My name is Steven P., a Samsung Expert and a fellow user as well, I will be assisting you. It would be a pleasure to help you and I hope to be able to successfully resolve your issue. I hope you're doing well :-) The beta program is not open as of yet to the public. We haven't received any ETA on the Samsung side regarding the launch. When it's available you will see it in the Samsung + App as a pop up notification"
11-10-2018 10:43 AM
Unfortunately it doesn't seem the Note 8, S8 or S8+ will be allowed into the beta, but software has been discovered for Android 9 Pie for these devices and they should get the update later next year. My guess would be in the Spring time or by summers end.
11-10-2018 02:44 PM
The oneui website lists the note 9 as eligible for beta, it does not specify which models though
* Those in the USA must sign up through the Samsung+ app.
** Participation in the beta program requires a Samsung account. Create an account at: https://account.samsung.com/
*** The One UI Beta Program may only be available to certain devices, OS, and countries. Galaxy S9/S9+ with Android 9 Pie.
**** Beta program period and compatible devices vary by country.
From the Samsung One UI website. Does not list Note9