We're never going to see these books, are we?

I know some of the top J. R. R. Tolkien scholars. In fact, I live approximately halfway between two of them, Verlyn Flieger and Carl Hostetter, so I joke that my home is now the center of Tolkien scholarship. I’ve been told that a book will appear next year entitled The Nature of Middle-earth, edited by Carl Hostetter, which will be the last collection of the remaining unpublished works of Tolkien. It’s an annotated version of some unpublished Tolkien writings: