To paraphrase an old SNL gag, Mark Dvoretsky is still dead - the great trainer and author died in 2016 - but a new edition of his classic Dvoretsky's Endgame Manual is now in print. The mantle has been taken up by German GM and endgame specialist Karsten Müller, who made the revisions for this edition. When the first edition came out in 2003, Jacob Aagaard dubbed this the greatest chess book of all time, and while we live in a golden era of chess literature, I wouldn't be surprised if Aagaard still held that opinion. (It is at the very least on the short list for that title, and not just in Aaagaard's opinion.)
What's new? Not too much, which is what one would expect. Better engines and prolonged analytical investigations are bound to lead to little improvements on endgames that aren't within the grasp of tablebases, and some small changes in the organization of the material, especially in the rook endings section, has been done by American GM (and erstwhile Dvoretsky student) Alex Fishbein. There's also a pervasive formatting change. In earlier editions, the material that Dvoretsky considered essential was printed in a blue font. For this edition, the font is black, and the relevant text is highlighted in gray. It would be difficult for me to express how much I hate this innovation, and I hope it is banished forever not only in the sixth edition (which is now and for this very reason an absolute must), but in every future edition of every book that is to be written from now until the end of time.
I've reviewed earlier updated editions of this book, and in part out of laziness but mostly because it's especially apt, I'll quote myself: "if you don't have an earlier edition, buy this one; if you do, then don't." (Or better yet, find the fourth edition and send Russell Enterprises a note to say you bought that one instead of the 5th edition because of the gray highlighting. You'll also save yourself a few bucks.)
To be fair, your mileage may vary. You might not be bothered or distracted by the gray highlights, and might even like them. (Or may at least prefer them to the blue font.) If so, then by all means, go for it. And regardless, if you don't have any edition of this book, you should buy it - and you might as well buy the most recent one - if you are even slightly serious about the game and rated at least 1500-1600. This is too important and too good a book not to get if you're a student of the game.
An Amazon link is here, and you can have a look inside there as well.