Experience Azeroth as one of Battle for Azeroth’s new six playable Allied Races. Earn the respect of the Nightborne, Lightforged draenei, and other noble allies, and you’ll unlock the ability to create new prestige characters of that race.
Once an Allied Race is recruited, you can rediscover Azeroth through a revamped leveling experience featuring zones that scale as your character grows in power. Create a new character and complete the full leveling experience to earn a distinctive Heritage Armor set—a lasting symbol of your dedication.
Source:World of Warcraft