Light Novel Ore no Imouto ga Konnani Kawaii Wakeganai To Be Animated

According to Mainichi news, Fushimi Tsukasa's light novel Ore no Imouto ga Konna ni Kawaii Wake ga Nai was announced to get an anime adaptation. The production company is Aniplex. The details of the anime will be announced in the sixth volume of the novel to be released on May 10th.

Source: Mainichi, Akiba Blog

Updated on May 1st
According to Web Newtype, the staff and the cast of the anime are:

Staff
Director: Kawaguchi Keiichiro
Scenario: Kurata Hideyuki
Character Design: Kanzaki Hiro (Oda Hiroyuki)
Production studio: AIC

Cast
Kosaka Kyosuke: Nakamura Yuichi
Kosaka Kirino: Taketatsu Ayana
Kuroneko (Goko Rur)i: Hanazawa Kana
Saori Vageena: Nabatame Hitomi
Tamura Manami: Sato Satomi

Source: Web Newtype