According to May issue of Shonen Ace magazine, an OVA of upcoming school mystery anime series Hyouka was announced.
It will be bundled on Blu-ray with the limited edition third volume of the manga and it will be released January next year. The 25-episode OVA revolves around an incident at the municipal swimming pool.
Based on the novel by Honobu Yonezawa 0f the same name, its anime adaptation is set to premiere on April 22. Here is a 3-minute trailer of the anime.