Feast of the Moon 4 introduces Penelope "Half-Pint", Druid/Warlock from D&D Beyond's Silver and Steel and brings back Sentry, the Warforged Paladin (Oath of the Ancients) from High Rollers: Aerois and Vlahnya Um'vairar, the Eladrin Bard/Wizard.
More info in-game & on our blog.