Gabriel García Márquez, the 83-year-old Colombian author and Nobel Prize winner, below, is at work on a new novel, Agence France-Presse reported. Cristobal Pera, his Random House Mondadori editor, spoke at a presentation in Mexico City on Thursday for Mr. Márquez’s newest release, a book of essays titled “I Didn’t Come to Give a Speech.” He said Mr. Márquez was busy completing a new novel to be called “We’ll Meet in August.” No publication date has been set. The current release, the first for Mr. Márquez since “Memories of My Melancholy Whores” in 2004, is a compilation of speeches, beginning with his high school commencement in 1944. It is to be published in Spanish on Nov. 9.