The Return of Rome campaign is set for a May 16 2023 release date according to a tweet posted by the official Age of Empires account. The latest campaign expansion for Age of Empires II: Definitive Edition follows several (almost) yearly DLC drops since the re-mastered strategy game's debut in late 2019 - Lords of the West (January 2021), Dawn of the Dukes (August 2021) and Dynasties of India (April 2022). Last year's India campaign added a significant amount of content, in the form of three new civilizations: the Bengalis, Dravidians, and Gurjaras. Three new campaigns were added to the base game and introduced a trio of new empires: Babur, Rajendra, and Devapala. The entire Indian civilization within the game was renamed to the Hindustanis.

Age of Empires II: Definitive Edition - Return of Rome was first announced, albeit briefly, during a livestream on 25 October 2022, which celebrated the 25th anniversary of the real time strategy game series. Details are scarce about the actual content on offer, but the upcoming campaign is expected to feature all 16 of the original civilizations from the first entry in the franchise (AoE) according to an internal Xbox Games Studios memo.