FEARnet posted the first review that I've seen of The Wind Through the Keyhole.
Keyhole, contrarily, feels fresh and wide-open, attaining its own unique flavor among the Tower books while meshing seamlessly with the fabric of the series. Most importantly, it manages to retain the quest structure of the first four novels and also subtly underscores King's obsession with the nature of fiction in the latter books, providing a necessary bridge between the two halves of the series. That actually may be the most apt word to describeThe Wind Though the Keyhole: necessary.
The next best word to describe this book? Fun. Veritable buckets of it.
Whether readers loved or loathed the ending of the Dark Tower, a book like The Wind Through the Keyhole offers intriguing possibilities. The idea of further books set in Mid-World – whether along the path of our travelers (or at least set in their time), in Roland's past, or in legend – is appealing, owing to both the long history and vast expanse of King's fantasy world. In an authorial note midway through the book, King indicates that "The Wind Through the Keyhole" is only one story from The Great Elden Book, "a fine and terrible compendium that may someday merit publication of its own, as those stories cast light on Mid-World as it once was." While King may have come to his conclusion (if not the conclusion) of his primary story, The Wind Through the Keyhole proves out one of his long-standing adages: here, sir, there are always more tales.
Good review, book sounds great too. Can't wait for my copy to arrive. I'll write my own review then.