Cthulhu by Torchlight was just announced on
Treantmonklvl20's Patreon channel, because he helped work on it (mostly on subclasses, some on monsters) with Mike Mearls, who is the lead designer on this book.
This book, which is now newly available on DnDBeyond, combines Call of Cthulhu and 5th edition D&D. Videos drop tomorrow (I think) on YouTube.
LINK
Summary of contents:
New Subclasses to play. 12 subclasses, one for each class in the PHB:
Barbarian: Path of the Spell Scorned - abilities to counter magic
Bard: College of Drama - A bard who gets the entire party involved in hijinks, often with party-wide disguise
Cleric: Apocalypse Domain - The world is ending, and this guy is here to foretell your doom
Druid: Circle of the Symbiote - You've embraced nature so much it's now growing out of you (Swamp Thing)
Fighter: Hero - Inspiring Leader (Tanis from Dragon Lance, some elements of a Warlord class)
Monk: Warrior of Cosmic Balance - When the Cosmos spins out of alignment, your job is to kick it back into place.
Paladin: Oath of the Guardian - A very tanky paladin. You are the one who protects others. Can forgo using weapon mastery to mark foes instead (no action).
Ranger: Trail Warden - Good at teamwork, keeping party out of trouble, tactically cunning. At mid levels can cause whole party to both move and hide as a reaction.
Rogue: Shadow Stalker - Rogue who is learning Shadow Magic, independent power source not slots, spent on shadow magic abilities, separates own shadow as scout.
Sorcerer: Hungering Dark - Shadow Magic, create shadows across battlefield for control, can create magical darkness you can see through AND your allies can see through
Warlock: The Exalted Assembly of the Feline Court - Pact with the Feline Powers that stand against the darkness. Can turn into a cat, 9 lives
Wizard: Bibliomancy - Alter your spells in fundamental ways by studying the science of magic. You're a hacker of spells.
Spells: 25 New Spells, some aimed at subclasses, some aimed at the setting.
Feats: 5 New Feats
Monsters: Cthulhu monsters to fight/survive (including stats for Cthulhu)(23 new monsters)
New Rules: Rules for
Skill Challenges, Rules for
Investigations in D&D. Pendragon-style role playing edge with a
Passion System with a role playing trait your character can trigger to explain why your character is going into danger which comes with a mechanical bump that is "a little bit juicier" than just getting heroic inspiration.
Magic Items: Tomes of Forbidden Knowledge magic items (5), which can threaten your sanity but grant power, and 2 more new items.
Background: One new background