Confirmed for January 2017.
Animation Production: A-1 Pictures (GATE, The Seven Deadly Sins, Grimgar of Fantasy and Ash, Magi: The Kingdom of Magic, Valkyria Chronicles)
Director: Yuuki Itoh (Magical Girl Lyrical Nanoha ViVid)
Character Design: Toshifumi Akai (Magi: The Kingdom of Magic, Kokoro Connect, Sound of the Sky)
Music: Nobuo Uematsu (Final Fantasy games I-XI) and Tsutomu Narita (Final Fantasy XIV composer and arranger)
Theme Song: BUMP OF CHICKEN (Kekkai Sensen OP)
Still unsure how this will turn out but going by the key visual and trailer the quality at least looks good. Have to see the ship and dragon in animation though still to judge properly. Character designer can did a good job I think, female characters aren't made with overly big boobs that bounce up and down with every single movement, clothes look good, hair design is nice and so are eyes.
Director, not sure about that choice, mostly a key animator and has only directed one series before. Music they're getting the game's music composers, which is a great choice. Also BUMP OF CHICKEN hype!