There will be a lot of fuss about this book in the next year, if the proposed movie starring Natalie Portman gets made, but I would really advise everyone to give it a big miss. Having read it I still can't work out who the author was aiming for. The zombies only make fleeting appearances, and the bulk of the book remains about the will they/won't they relationship between Elizabeth Bennett and Mr Darcy (and personally I hate both characters, and don't give a damn). It is not something that would appeal to your average horror/zombie fan. As for the fans of romance and the works of Jane Austen, well they should obviously stick to the original. In the end we are left with a one-joke book, with the joke being used up in the title of the book.
Seth Graham-Smith obviously couldn't be bothered with a major rewrite and so just shoe-horned his zombie passages in to the original text. As a result, after a vicious battle and the deaths of loved ones at the hands of the undead, the protagonists would simply say 'let us never speak of this again' and continue their ordinary lives, discussing who was going to marry which officer next.