I’m not sure I understand you correctly. But if your SM-G960F comes with Android 9 firmware version 9/10/11/12-2019, then - yes, I assume that. But opinions are different like the experiences of the /e/ users, e. g. → here and → here.
The ephone support team (ephone_support@e.email), which is responsible for the premium refurbished smartphones with /e/ pre-loaded, should be able to provide us with binding information. They sell Samsung S7 / S7 Edge and S9 / S9+
A better situation can be expected from spring 2020: v1-pie /e/ branch & “LOS 17.0 for /e/ will be after we upgrade present set of devices and v1 which is scheduled for spring 2020”