The latest Unearthed Arcana from Mearls and Crawford revisits four subclasses from earlier UA articles. "Part of the fun of playtesting is seeing how feedback and play can push a design in new directions. In this month’s Unearthed Arcana, we revisit class material that appeared in previous installments: four subclasses for various classes, along with Eldritch Invocations for the warlock. This material was all popular, and the revisions to it were driven by feedback that thousands of you provided in surveys. The updated subclasses are the druid’s Circle of the Shepherd, the fighter’s Cavalier, the paladin’s Oath of Conquest, and the warlock’s Celestial (formerly known as the Undying Light). One of the main pieces of feedback we got about the Eldritch Invocations is that most players didn’t want them exclusive to particular Otherworldly Patron options, so we’ve opened them up to more warlocks, tweaked them, and cut the least popular ones."