What do you guys think about it ?
Nope as the Developers Preview that's out is only for the 8 series.
You'll eventually will get a normal beta after the stable version is released for the OnePlus 8, 7 and Nord. Probably around December.
Please, check and use this tread for questions and comments, read the first post:
Use the search engine before opening a new thread
Best regards, Cervantes, Forum Moderator
Bringing an Ultra-Smooth 120Hz Fluid Display experience to the OnePlus 8T
by dsmonteiro, 2020-09-22