Where did you see that? The KLL page is still up and accepting Prime memberships, and the Kindle Select (author program behind KU and KLL) terms are clear that

Where did you see that? The KLL page is still up and accepting Prime memberships, and the Kindle Select (author program behind KU and KLL) terms are clear that authors can opt their books into or out of either or both. Edit: I do notice that the website doesn't display the KLL option for me on eligible books, but I assume that's because my KU subscription enables less restrictive access to the same book.