I had been waiting for this book for a very long time and now it's finally here! I bought this today and it is very detailed about each character in the saga, from physical appearance to their histories, some of which we've never heard of until now (e.g. James, Victoria and Laurent), with illustrations by Young Kim (who was involved in the making of the Twilight graphic novel).
The book also has illustrations of settings, some of the best fan art, foreign book covers, outtakes, book and chapter summaries, chapter by chapter playlists Meyer listened to as inspiration as she wrote the books and much more.
Twilight fans will not regret buying this!