According to official website of Media Factory, the anime "Non Non Biyori
," currently being broadcast on TV, will also get an OVA adaptation. More information will be disclosed on the official anime website on November 27th as well as in the January issue of Comic Alive, to be published on the same date.
The announcement also mentions major reprints for all the 6 volumes of the manga and that the next (December) issue of Comic Alive will feature a Non Non Biyori special including front cover visual of the manga characters.
Official anime website: http://www.nonnontv.com/
Official manga website: http://www.mediafactory.co.jp/comic-alive/non-non-biyori/
Source: Media Factory
Non Non Biyori OVA