Vol 4A was published in 2011: https://www.amazon.com/Art-Computer-Programming-Combinatorial-Algorithms/dp/0201038048/ https://www.amazon.com/Art-Computer-Progra

Vol 4A was published in 2011: https://www.amazon.com/Art-Computer-Programming-Combinatorial-Algorithms/dp/0201038048/ https://www.amazon.com/Art-Computer-Programming-Combinatoria... Vol 4B was partially published in fascicles: https://www.amazon.com/Art-Computer-Programming-Fascicle-Preliminaries/dp/0134671791/ https://www.amazon.com/Art-Computer-Programming-Fascicle-Pre... and https://www.amazon.com/Art-Computer-Programming-Fascicle-Satisfiability/dp/0134397606/ https://www.amazon.com/Art-Computer-Programming-Fascicle-Sat... Instead of the ultimate edition of vols 1-3, so far we've got a "patch" by Martin Ruckert who coordinated the volunteers: https://www.amazon.com/MMIX-Supplement-Computer-Programming-Volumes/dp/0133992314/ https://www.amazon.com/MMIX-Supplement-Computer-Programming-...