This is going to make a lot of people pretty upset. I'm one of them. "Blade Runner" is the holiest of holys to me. The thing we have to remember, though, is that no matter how spectacular the film is, no matter how much it impacted our lives, it has always had a troubled history in terms of standing on its own as a work.
The novel was already a loose adaptation of an earlier work. The title alone has an incredibly complex history, being also the title of the Alan E. Nourse novel, which was then later adapted into a sort-of novel/screenplay by Burroughs.
What most people who love the movie hate to deal with is that it already had sequels, and they flopped horribly. The movie, in fact, already has prequels in publication.
So, though the news of today is saddening in some ways, I think that those of us who hold certain films to be too special to be touched by the prequel/sequel/remake machine that Hollywood has become have to remember that many of those texts already have a troubled history. The way we show them that this prequel/sequel/remake madness has to stop, though, is by not going to these films, not by bitching and moaning and then going anyway.