In January, 2015, Microsoft created a job advert that stated the following:"The Decisive Games team is focused on world class strategy game development, and is building a studio that will bring the next installment in a beloved strategy game franchise to the next generation of gamers around the world. This is a highly-collaborative, agile team, with a play-centric approach to game development."We all know that "a beloved strategy game franchise" is Age of Empires.So, Age of Empires IV has been in the works for almost a year already.Also, it's a known fact that AoE IV will be about World War 2 (maybe including the years before and after it).This is the official artwork by Microsoft:The last proper entry in the series though, by original creator Ensemble Studios, was Age Of Empires III in 2005. Not long ago, the AoE 2 HD was released with 2 new expansions.