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.
I think this, more than anything, is a sign that they don’t foresee much international interest in this IP. Movies tend to have a huge delay before they are released overseas, even just with subtitles (never mind a dub). With the large gaps between films (Harry Potter took 9 years to release 7 films as a point of comparison) and the delay in subtitles for international consumption, they must really just expect it to be viewed in Japan.