User blog comment:NicktheDummy/2017 is the 25th Anniversary of Goosebumps!/@comment-28171460-20161227220209/@comment-4207976-20161228190206

Stine said there were multiple surprise in store in 2017, not just one. He also said that weeks after he announced the SlappyWorld series. So I think there will be more Goosebumps stuff in 2017 besides SlappyWorld.