The details of this announcement are a bit unclear to me as somebody unfamiliar with the details of the Yamato franchise. Rather than trying to make sense of the Japanese source where the visual came from, I am trying to understand an English source I found.

As best as I understand, this project, “Be Forever Yamato: Rebel 3199”, will consist of 7 films rather than a TV series. The first of these films will be titled “Dark Invasion” and will premiere in Japan on July 19th.