The cast and staff members of Eromanga-sensei were announced during the Nico Live stream on September 27. Masamune Izumi will be voiced by Yoshitsugu Matsuoka (Sword Art Online).

Staff
Director: Ryouhei Takeshita (Gekkan Shoujo Nozaki-kun)
Series Composition: Tatsuya Takahashi (The iDOLM@STER Cinderella Girls)

Eromanga-sensei started its publication in December 2013 when the duo, writer Tsukasa Fushimi and illustrator Hiro Kanzaki, finished writing Ore no Imouto ga Konnani Kawaii Wake ga Nai. The light novel currently has seven volumes total, with the most recent volume released on August 10. There is also a manga adaptation drawn by rin, which has been serialized in Dengeki Daioh since May 2014 and currently has four volumes total, with the most recent volume released on August 10.

Source: Dengeki Online


Update October 2
The official website has been launched and announced additional cast members. It has also been announced that the series will premiere in Spring 2017.

Megumi Jinno: Ibuki Kido (Re-Kan!)
Elf Yamada: Natsumi Takamoro (Orange)
Tomoe Takasago: Yui Ishikawa (Qualidea Code)
Muramasa Senju: Saori Oonishi (Seirei Tsukai no Blade Dance)

Official site: http://eromanga-sensei.com/
Official Twitter: oreimo_eromanga

Source: Otakomu