According to their official website, Kyoto Animation has announced a new TV anime "Hyouka". It is based on the mystery light novel "Kotenbu series" first published in 2001.

Hyouka anime official website

Update: To be aired from April.

Staff
Director: Takemoto Yasuhiro
Series Composition: Gatoh Shoji
Character Design: Nishiya Futoshi
Music: Tanaka Kohei

Synopsis:
Oriki Hotaro is a high school boy, who always acts passively. One day, he enters "Koten Bu (Classic Literature Club)" as recommended by his elder sister. There he meets Chitanda Eru, Fukube Satoshi, and Ibara Mayaka. Chitanda is a calm beautiful girl but she turns into an embodiment of curiosity once she says, "I'm interested in it (Watashi, Kininarimasu)". Fubube is a smiling boy who excels in memory, but he never constructs his own deduction. Ibara is a short girl and is strict with others and herself. She loves Fubube, but he always dodges her approach. They begin to investigate a case that occurred 33 years ago. Hints of the mystery is buried in an old collection of works of the former members of Koten Club. The collection is titled "Hyouka".

Source: Kyoto Animation

Hyouka on MAL