I can't wait to get my hands on this. Stephen King has been working toward the completion of his seven book 'Dark Tower' series since perhaps as early as 1970 when he was 22. Many have called the Dark Tower series his opus and even more wondered if it's completion would ever come, especially since he was very nearly killed in a road side accident in 1999, but the series is now complete and I won't be able to get my hands on a copy of it fast enough.
EXCELLENT Article: The New York Times > Books > Sunday Book Review > 'The Dark Tower': Pulp Metafiction (free registration required)
Read the first chapter! The New York Times > Books > First Chapters > First Chapter: 'The Dark Tower VII' (free registration required)
Great Review: Boing Boing: Stephen King finishes the Gunslinger books
Buy it on Amazon: Amazon.com: Books: The Dark Tower (The Dark Tower, Book 7)