The last 6 chapters of season 1 are yet to be released
during an interview to Saint Seiya: Knights of the Zodiac´s director Yoshiharu Ashino on the brazilian website cavzodiaco, has revealed that the second season for Masami Kurumada´s Saint Seiya re-adaptation is already in production.
On the same interview he revealed that the last 6 chapters of season 1 are already made and will cover the fights against the Silver Saints. These chapters are not part of season 2 and will premiere at a later date still to be revealed.
Via: ANMTVLA (Spanish)