I don't think there is a bright future in this universe.
Well, that goes with the territory! With the exception of the horror/comedy Return of the Living Dead II
(where the zombie problem is solved, and the heroes survive), I cannot recall another where the future was anything other than the death toll rising or permanent dread for the survivors.
The question is, how did this virus originate? it had to be a recent set of events that lead to the creation of the walkers.
I think the TV series will go the route of a man-made plague, rather than leaving the cause murky as in the 2004 Dawn of the Dead