Since I can’t find an official announcement, here is some information about the newly-released classes:
DEATHKNIGHT
Mythic Ghulvania Knight
Crypt Keeper (13 Purple)
Death Mark an enemy. Deal [Magic + 1] true damage to all enemies below them, boosted by enemy Death Marks. [3x]
(Undead Bond, Warded, Death Curse)
Choose one Perk to activate: Unholy Armor, Dark Gift, Risen Knight
Magic Bonus when using purple weapons
Death Curse: Death Mark all enemies when I die.
Minor Magic Traitstone: 34
Arcane Dark Traitstone: 6 (Blighted Lands, Ghulvania)
Celestial Traitstone: 2
Quest: Ghulvania - Kingdoms - Gems of War Database
ORACLE
Mythic Divinion Fields Centaur
Staff of Visions (12 Purple)
Give an ally [Magic + 1] to a random skil, then give them Barrier and 3-10 Mana.
(Centaur Bond, Invigorated, Portent)
Choose one Perk to activate: Vision of Health, Vision of Power, Vision of Home
Magic Bonus when using purple weapons
Portent: All Centaurs gain 2 Magic when an enemy casts a spell.
Minor Magic Traitstone: 34
Arcane Plains Traitstone: 6 (Divinion Fields, Silverglade)
Celestial Traitstone: 2
Quest: Divinion Fields - Kingdoms - Gems of War Database
TITAN
Mythic Stormheim Giant
Thorodin (14 Blue)
Deal [Magic + 5] damage to an enemy, and half of that damage to adjacent enemies, boosted by ally and enemy Giants. [6x]
(Giant Bond, Big, Giant Lord)
Choose one Perk to activate: Mighty Heart, Titan’s Strength, Giant Kin
Magic Bonus when using blue weapons
Giant Lord: All Giants start battle with 50% Mana.
Minor Water Traitstone: 34
Arcane Blood Traitstone: 6 (Mist of Scales)
Celestial Traitstone: 2