The official spook day content will be released around October 15th. According to Short, players can look forward to a more light-hearted experience than the main plot. In fact, she states, "Halloween should be more like 'an episode of Buffy.'" The storyline will begin in Kingsmouth and will flesh out a couple of cat characters who have been waiting in the wings as well as add depth to the stories of two known characters. Stonehenge is also in the spotlight, and players can get a Head-O-Lantern for a limited time.
For more details (and a close up look at Irusan, King of Cats), check out the full dev blog.