It is an updated version of the novel, and its too bad that you've burnt yourself out. This Bond is so much better than most of the other movies, especially the latest ones. I rather enjoyed the books, and am in the process of rebuilding my collection (the vast majority of things were conveniently "lost" when we moved across the country.) I especially like the dialogue taken from the book and incorporated into the movie, and the updating of the villain (since the Cold War is over--M mentions this, of course), and the torture sequence (taken right out of the book, practically page for page) (and I didn't like it in a masochistic kind of way, more of an appeciation of maintaining purity).
Even if you're burnt out on Bond, I still recommend watching it. At least rent it, although it is definitely a big screen, digital surround sound movie.
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Superman wears Jack Bauer pajamas.