From what I have read, this also includes the epilogue they may release more but perhaps under a different name since the Rosario was destroyed and the name Rosario + Vampire is no longer able to be referenced due to that simple fact, and Tsukune is a vampire now and the outer Moka is gone. Perhaps the name would be changed.
It also said that "Yoshii Kiria took over fairy tail" and then state "but let's save that story for another time". At least from what I understand of the wording, it is passable for a continuation of Rosario + Vampire, but would most likely no longer be called that anymore. This comes from "Dawn of the Dark" arc of the manga as Tsukune is being trained by Moka's father, Shuzen Issa in the after story.