The BLOOD-C website has updated with a variety of news. Production IG and Tsutomu Mizushima (xxxHolic) are back with CLAMP to create the anime. The screenplay will be written by Nanase Ookawa and Jun'ichi Fujisaku (Blood+). The series will also have a movie release in 2012. CLAMP has a comments page here and the series' twitter account has opened, too --> @blood_c
And for something special, fill out a short survery HERE and download a special CLAMP-illustrated wallpaper. You can run the page through google translate and still get to the download page.
Natalie.mu also has a nice image of the website's splash illustration.
And finally, Newtype 5 (on sale today) will have an article featuring CLAMP's BLOOD-C illustrations.