http://www.kyotoanimation.co.jp/kotenbu/
The official site has updated with staff comments from Honobu Yonezawa(the novel author who will, like all previous original authors in KadokawaxKyoani productions, do screenplay assistance), director Yasuhiro Takemoto and writer Shoji Gotoh.
The comments suggests that Yonezawa will play a big part in deciding where the direction the story is going, while the director says that he specifically wants to depict the "thorns of adolescence" and the processes of growth from it.