The review is
here, and generally positive--although the reviewer does point out a couple of King's sentence-level clunkers, and makes a reasonable argument: considering the sheer mass of the guy's output, you'd think he'd be a better stylist. Here's the quote:
As for the prose, it’s not all smooth sailing. Given King’s extraordinary career-long dominance, we might expect him at this point to be stylistically complete, turning perfect sentences, as breezily at home in his idiom as P. G. Wodehouse. But he isn’t, quite. “Then it came down on her again, like unpleasant presents raining from a poison piñata: the realization that Howie was dead.” (It’s the accidental rhyme of “unpleasant” and “presents” that makes that one such a stinker.) I felt the clutch of sorrow, too, when I read this: “What you’re planning is terribly dangerous — I doubt if you need me to tell you that — but there may be no other way to save an innocent man’s life.”
The reviewer is forgiving, though--pointing out that "King has always produced at pulp speed," and that "writing flat-out keeps him close to his story, close to his source. It seems to magnetize his imagination..." Still, you'd think that a guy who has publicly expressed his frustration with the "snobbery" of the literary world would take the time to prove them wrong: it's not that hard to clean up the prose before going to press.
On edit: it's worth noting that Wodehouse published 72 novels (three posthumously), 19 short story collections, three autobiographical books, and several plays and libretti. So, no slouch himself on the output front.