What is New adult fiction. According to wikipedia:
New adult (NA) fiction, also rendered as new-adult fiction, is a developing genre of fiction with protagonists in the 18–30 age bracket.
This is the newest of the genres and was coined by St. Martins Press back in 2010 to describe fiction that is not exactly Young adult or exactly adult either. Though some of the material in new adult fiction does include some adult content it is not classed as Adult, which is strange but hey who am I to argue.
This genre is going to be the next big thing, but it is very slow to gather momentum with sites like Amazon and Barnes and Noble yet to add the genre, which makes it very difficult for Authors of New adult fiction to choose the correct category to get listed in. Although it has been 7 years since the term was coined, people still know very little about this genre but sooner or later it is going to become one of the most popular genres.