It was revealed on the Comic Con Experience on Sao Paulo Brasil.
Satoshi Terumoto, The Producer of Saint Seiya Soul of Gold, has revealed that a new Saint Seiya Anime should be revealed soon. This is because this month it will be the 30th Anniversary of the Franchise AND the big return of Saint Seiya: Next Dimension, the Official Prequel/Sequel that was on Hiatus two years ago.
Talking about Next Dimension. Terumoto left the door open for an Anime adaptation of this manga.
Finally Terumoto ended saying that we should have high hopes with this New Saint Seiya Anime.
Saint Seiya is a Shonen Manga released on 1985 by Masami Kurumada, it Success and popularity was so big that less than three months old an Anime adaptation was already greenlit, and until today the series has continued with Spinoffs, Mangas, Animes and Movies.
I made a cover up Articles on Saint Seiya -Soul of Gold- (it´s latest Anime) and you can check it here (From last to first), or search for them yourself under the “In The Latest Chapter Of...” Tag (there are other series too in there).