The next book (both covers - standard and special edition - shown below) is a monster book/multiverse guide called Mordenkainen's Tome of Foes. On Monday the official press release will be coming with more information. Amusingly, the books that Mike Mearls and Nathan Stewart held up in today's "Fireside Chat" said "Tomb of Foes"; fortunately these are just mockups and the book is still being worked on for a May release. More info on Monday! [5 FEB UPDATED WITH PRESS ANNOUNCEMENT]
(2nd Feb) Discover the truth about the great conflicts of the D&D multiverse in this supplement for the world's greatest roleplaying game.
This tome is built on the writings of the renowned wizard from the world of Greyhawk, gathered over a lifetime of research and scholarship. In his travels to other realms and other planes of existence, he has made many friends, and has risked his life an equal number of times, to amass the knowledge contained herein. In addition to Mordenkainen's musings on the endless wars of the multiverse, the book contains game statistics for dozens of monsters: new demons and devils, several varieties of elves and duergar, and a vast array of other creatures from throughout the planes of existence.
$49.95 / May 29th, 2018 / 256 pages, hardcover (pagecount updated to 256; confirmed by WotC's Jeremy Crawford)
Leviathan as an Elder Elemental that is Tarrasque level
Playable Mindflayers will never, ever be a thing in D&D
Plenty of random tables for both DMs and players
Clockwork constructs built by gnomes
Gnome invention table
Elves have so many different forms because they used to be shapeshifters before their fall from being Fey
UPDATES (5th Feb)! The announcement from WotC has arrived.
One of the most powerful wizards in the Dungeons & Dragons multiverse shares some of his hard-won knowledge with fans in a new book full of lore and monsters for D&D fifth edition. Mordenkainen’s Tome of Foes is available everywhere on May 29, but you can pick up a limited alternative cover in game stores on May 18, 2018.
Mordenkainen hails from the City of Greyhawk, but over the eons he has expanded his mastery of the major conflicts in the multiverse. Similar to 2016’s Volo’s Guide to Monsters, Mordenkainen’s Tome of Foes not only contains everything you need to run challenging new monsters at the table with your friends but also provides tons of storytelling information on some of the most contentious relationships in the multiverse. You’ll learn more about the schism between drow and other elves, githyanki and githzerai, and dwarves and duergar, in addition to reading about the incessant Blood War between demons and devils.
Players will love to delve into Mordenkainen’s Tome of Foes to search for story hooks to use with their characters, as well as try out some of the player options for races like tieflings and elves, or maybe an otherworldly githyanki or githzerai. Dungeon Masters looking for inspiration and greater challenges for players who have reached higher levels of play will find much to explore in Tome of Foes.
Look for Mordenkainen’s Tome of Foes in your local game store on May 18! Otherwise, you can pick it up on May 29, and start adding new monsters and lore nuggets to your D&D sessions.