Details were released on P.A. Works' (Angel Beats!, Another) summer anime Tari Tari along with the opening of the official website. Many of the same team from Hanasaku Iroha are working on this project.

Staff

Original Work: Evergreen 

Direction, Series Composition: Masakazu Hashimoto (Professor Layton and the Eternal Diva)

Character Drafts: tanu (character designs in Akiba's Trip)

Character Designs, Animation Direction: Kanami Sekiguchi (Hanasaku Iroha, Angel Beats!)

Art Direction: Kazuki Higashiji (Angel Beats!, Hanasaku Iroha)

Color Design: Katsue Inoue (Hanasaku Iroha, Another)

Photography Direction: Satoshi Namiki (Hanasaku Iroha, Another)

3D Direction: Yohei Hirata 

Editing: Ayumi Takahashi (Hanasaku Iroha, Another)

Sound Direction: Jin Aketagawa (Hanasaku Iroha, Bodacious Space Pirates)

Music: Shirou Hamaguchi (One Piece, Hanasaku Iroha)

Music Production: Lantis

Production: Infinite

Cast announced so far includes:

Ayahi Takagaki (Kurisu Yukine from Symphogear, Mitsuba Marui from Misudomoe)

Asami Seto (Yoshino Takatsuki from Wandering Son, Chihaya Ayase from Chihayafuru)

Saori Hayami (Chihiro Miura from Morita-san wa Mukuchi, Yurin L'Ciel from Gundam AGE)

Nobunaga Shimazaki (Kaito Kirishima from Ano Natsu de Matteru, some roles in One Piece)

Natsuki Hanae (roles in Ben-To and You and Me)

It's a little hard to tell what the show will be about, but maybe the musical notes in the logo are a clue:

via Otakomu