Good news: the Aoi Hana anime website is up! http://www.aoihana.tv/
It's pretty, if simple for now. The website graphics convey the mood of the manga very well, with plenty of blue flower imagery (subtle :) ) and a promo video in the middle of the page. (Just press the blue "Play" button.) It's a nice promo, even though it only uses images from the manga. I want to see an anime picture or animated trailer of some kind. (Soon!! ;_;) But to the credit of the people who made the promo, they chose really nice images from the manga and edited them together well. ^^ And it further whets my appetite for the series.
Better still, Kenichi Kasai is directing Aoi Hana! XD With two other highly lauded romantic dramas with a similar aesthetic sensibility to Aoi Hana under his belt, Honey and Clover and Nodame Cantabile, I think that he's the perfect choice to direct this.