Additional cast confirmed:
Takahiro Sakurai as Akane
Seiichirou Yamashita as Clay
Mikako Komatsu as Eternal Feather
Kotori Koiwai as Kana Altair
also original cast for all returning characters is confirmed too.
OP by Dancing Dolls
ED by Haruka Chisuga, Aoi Yūki and Saori Hayami
For designs of new characters you can look on the
official site.