I don't read king all that often, but I guess he's making it even easier for me not to read his books now. I don't buy paperbacks anymore and haven't outside of ref books and gifts for many years now. Even a series I really wanted to read (Harry potter) didn't change that either (not that it's an issue anymore since pottermore
)
I've no doubt many will not wait though and will just pirate the ebooks like happened with hp.