I think the Harry Potter books certainly provide evidence that books can receive as much hype, if not more, than many films and computer games. They are, obviously, a rather special case. I think that a lot of books receive hype such as when a particularly acclaimed author releases a new book (Stephen King, for instance) but beyond the more popular authors, books only tend to receive hype in specific literary or thematic circuits. I don't think that reflects badly upon books, but when it comes to getting people hyped up about them being released, it just isn't that widespread.

However when a book is released and gets good reviews by critics of television personalities (such as Oprah or Richard & Judy), the book obviously receives a certain boost in popularity and undoubtedly creates hype about a certain book or author. However it's important to remember that hype is no guarantee or quality and that even if books get more or less exposure in future, I'm sure there will still be a consistent stream of good books in the future. Even if the only way you find out about them is from word of mouth or from reading book reviews in newspapers or something.