How many books will there be in the wardstone chronicles?

The Wardstone Chronicles series by Joseph Delaney is a planned 12-book series. As of today (2023-10-26), eight books have been published:

1. The Wardstone Chronicles (2004)

2. The Spook's Apprentice (2005)

3. The Spook's Curse (2006)

4. The Spook's Secret (2007)

5. The Spook's Battle (2008)

6. The Spook's Destiny (2009)

7. The Spook's Sacrifice (2011)

8. The Spook's Revenge (2012)

The remaining four books in the series have not been published yet, though Joseph Delaney has confirmed their planned titles:

9. The Spook's Enemy

10. The Spook's Quest

11. The Spook's Legacy

12. The Spook's Legacy (originally planned as The Spook's Choice)

However, there is no confirmed release date for these books.