: Unofficial repositories sometimes use "Volume 6" labels for unrelated computer science papers or incomplete drafts that do not contain Knuth's work.
: Work on this volume is planned to follow the completion of Volume 5 and a subsequent major revision of Volumes 1–3. Warning Regarding Unofficial PDFs the art of computer programming volume 6 pdf
Here is everything you need to know about the status of this volume and how to navigate the current series. Current Publication Status of Volume 6 : Unofficial repositories sometimes use "Volume 6" labels