They are not releasing a full fidelity FA/18........not even close.
And based on their previous history, we are unlikely to ever see it being completed either.
I'd argue the two most relevant data points are the previous DCS aircraft, Blackshark and A-10C. They both did eventually reach "full fidelity", or at least as "full" as is realistically feasible for a public desktop based simulation.
The key word in that sentence of course, is "eventually"