The bad news: It’s not another sequel.

The good news: There will be plenty of brand-new details in The Twilight Saga: The Official Illustrated Guide, a reference book Stephenie Meyer created to accompany her best-selling novels. According to a press release from Little, Brown Books for Young Readers, the $24.99 encyclopedia, which will go on sale April 12, 2011, includes “character profiles, outtakes, a conversation with Meyer, genealogical charts, maps, extensive cross-references, and much more,” including art by Young Kim, who illustrated Twilight: The Graphic Novel, Volume 1.

For her part, Meyer said, “I’m always amazed at how many in-depth questions my readers have about my characters and the world within the Twilight Saga. With The Official Illustrated Guide, I hoped we could incorporate as many details as possible, including character histories, like Alice’s back story.”

Let’s hear from Twilight fans–is this something you want for your collection?