I would think until Samsung One Ui has left Beta Stage and is pushed out to Samsung devices we won't have a comprehensive list of devices that's compatible with it @tphem55
Sometimes not all the features in new firmware will be available to some devices too due to hardware limitations.
As Samsung and networks refrain from commenting on software release dates probably because of the backlash they would get if the dates slipped the best practice is to watch here and on tech blogs and periodically check your software update section if reports say your model of phone is compatible.
Yes i read septemeber 2019
Looks like we're getting 2 OS Updates.
Here the link of the article : www.sammobile.com/2018/12/24/samsung-android-pie-update-roadmap
I saw in two lists J330-FM occured but i suspect that updates that will get is maybe 8.1 oreo (some phone get 1 major update, but if its true that it will get 9.0 pie on september 2019, i will be suprised!)
Ahh... I read it on the Internet so it must be true! Especially comming from Samsung ; )
Sadly, it's late December 2019 and the J3 I'm holding is running Marshmallo 6.0!!! ... Jesus ran a newer OS. So sad.