Book names are important. They work with the cover to provide a glimpse of what lies within the pages. From a marketing perspective, the title and cover must tell viewers as much as possible about the book in a fraction of a second that their eyes rest upon it. Above all else, it must speak to the genre.
With that in mind, we have changed my werewolf series from Wulfleng, to Nightshifter. It speaks more clearly to the genre. So if you are wondering what happened to Wulfleng, the answer is it is hiding behind a new name.