The Scary Stories series does not have a new book coming out soon. The latest book, Scary Stories 3: More Tales to Chill Your Bones (Book 3), was published in January 1991.
The first book in the Scary Stories series, Scary Stories to Tell in the Dark, was published in October 1981.
The Scary Stories series primarily falls into the Horror genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.