Grokii

As the title says I'm interested in paperback versions of the new release version of the Alcatraz books. This is for my daughter and we just have a preference for paperback over hardcover. I checked on amazon and the new versions appear to be available in hardcover and ebook, but not paperback. How would I go about finding if a paperback release will or won't happen? If it is going to happen, then how long would we need to wait? - Grokii