According to Sue Rostoni at the SW.com boards, there are no current plans to bring Karen Traviss' novelization of The Clone Wars film to paperback. Sorry if you had been waiting for a cheaper version to pick up. See below:
"The Clone Wars novelization was originally slated as a trade paperback (as the other Clone Wars novels) and Del Rey decided to change it to a hardcover somewhere along the way. I'm not certain why they decided not to follow it with a paperback, unless the sales figures were low and, with the economy at this low point, felt that a paperback wouldn't pay for itself. But I'm just guessing...."
"Back quite a long time ago a few people asked why THE CLONE WARS novelization wasn't coming out in paperback here in the U.S. since it initially came out as hardcover. At that time I didn't know and guessed that perhaps it didn't sell as well as expected, due to the economic slowdown. I should never post my "guesses." I have since spoken with Shelly at Del Rey and here's her answer:
The first Clone Wars novel was published as a hardcover because the decision was made to do the first cartoon episodes as a movie, and the feeling was that a hardcover better signaled everyone's excitement about the movie. Since the other 4 books were neither novelizations nor tied to a feature film, we stuck with our original plans to publish them in trade paperback--a first for that format in adult SW fiction. If we were to reprint the first book in mass-market paperback, it would still be a singleton; when we are closer to the publication of the 5th and last book, we will be looking at all five and considering where to go with them, format-wise."