Well yeah, Earth-51 was recreated as the Fifth World where the New Gods were reborn, but with the ban in place it's generally considered Grant Morrison will be in charge of their inevitable return. Also, these character designs do not match the redesigns seen in Final Crisis.
Also, the return of the New Gods is probably going to be a much bigger event since the reason they were killed off was because it was believed their status as gods and thus their importance in the DCU had dwindled. So when they do return I suspect they will be far more powerful than they were.