The official website for the new season of the anime has updated the character designs, check it out.
Hibiki Tachinaba
Tsubasa kazanari
Chris Yukine
Miku Kohinata
Genjuro Kazanari

The site also announced that Nana Mizuki will be singing the opening theme, while Ayahi Takagaki will sing the ending theme.
A preview screening of the anime's first episode will be held in Tokyo's Shinjuku ward on June 24, and the three main voice team members, Aoi Yūki (Hibiki), Mizuki (Tsubasa), and Takagaki (Chris) will attend.
Katsumi Ono, director of a season one episode and director of Hataraki Man and Yu-Gi-Oh! 5D's, is replacing Tatsufumi Itō as director in this new season. Animation chief Satoru Fujimoto is also taking on the role of character designer for Satoshi Koike. Akifumi Kaneko is returning to write and oversee the scripts, and original character designer Dan Yoshii is also reprising his role at Satelight. Elements Garden is once again taking care of the music. Niconico and Funimation broadcast the first season outside of Japan. The new season will premiere in Japan on July 4th
Promotional video already released: