According to Moon Phase [1], the light novel series Iriya no Sora, UFO no Natsu [2] by Akiyama Mizuhito (author) and Komatsu Eiji (illustrator) will be adapted to a manga.
The manga is scheduled to start serialization this summer in the seinen magazine Dengeki Maoh, and will be drawn by Kanno Touko.
Source: LightNovel.org [3]
Links:
[1] http://d.hatena.ne.jp/moonphase/20070606
[2] http://member.toei-anim.co.jp/animeister/iriya/
[3] http://lightnovel.org/2007/06/06/iriya-no-sora-ufo-no-natsu-light-novel-series-gets-adapted-to-manga/