This is one reason why I was so excited to see the formation of the Octavia E. Butler Society, an organization I hope to get involved with in the near future. Among other things, the OEB Society maintains a page that includes, for instance, highlights from academic conferences, a blurb about the release of unpublished stories, and the speculation about making Bulter's works into films.
As others have noted, when I have read and re-read Butler's books I have wondered why no one has ever made these books into movies. And I know what the short answer is: because they feature black people--particularly black women--as the protagonists. So, as much as I want to see these films, I am also scared of what Hollywood would do to them. Octavia Butler's books are about black people; as an extension, they are books about all of us. For too long people of color have been expected to extrapolate a future based upon white narratives. If we are willing to engage with the spirit of speculative fiction, there is no reason why black people's experiences--real or imagined--can't shape a (better?) future for all of us.
(My secret fantasy is that I might someday write the Parables screenplay. Now it is not so secret, but will most likely still remain a fantasy!)
Another post on the OEB Society site "People of Color in the Future" speaks to my current research project/obsession. While I am a pretty average white girl, the lack of people of color in science fiction, speculative fiction, and dystopia fiction is disturbing for a variety of reasons. The richness offered to speculative fiction by narratives that overtly tackle the question of, and issues related to, race is promising--to life as well as art.
Anyone interested in books that imagine a future for people of color should definitely check out Victoria Law's blog for Bitch Magazine, "Girls of Color in YA Dystopia." I have been devouring this reading list and there are so many interesting aspects to talk about. And my students and I will do this next spring in my "Girls on Fire: Gender, Culture, and Justice in YA Dystopia" online class!