The term "afterword" refers to a short section added at the end of a book, usually written by the author or someone closely associated with the book, where they share additional thoughts, reflections, or context about the content of the book.
The title is worse, but it has a foreword by David Bordwell and a new afterword by Michael Bamberger. (filmjunk.com)
«In this business classic — now with a new Afterword in which the author draws parallels to the recent financial crisis — Roger Lowenstein captures the gripping roller - coaster ride of Long - Term Capital Management. (businessinsider.com)