It's long been rumored that Stephen King was working on another Dark Tower book--that would be Volume VIII! Well, it's true, and you can pre-order it at Amazon.com right now. According to the Amazon listing, the book is scheduled for release April 3, 2012.
Sounds like it's going to be a story within a story, much like Wizard and Glass that tells about one of Roland's early adventures. I guess we'll just have to wait until April 2012 to know for sure--and that should give you just enough time to re-read the first seven volumes. Just in case you've forgotten the order, I'll help you out.
- The Gunslinger (1982)
- The Drawing of the Three (1987)
- The Wastelands (1991)
- Wizard and Glass (1997)
- Wolves of the Calla (2003)
- Song of Susannah (2004)
- The Dark Tower (2004)