Age of Empires II: Definitive Edition is not here yet, but a closed Steam beta test is set to start on June 18, when 1,500 eligible users will be chosen to join the battle. A larger wave of Age Insiders will be invited to take this 4K Ultra HD remake — which also features remastered audio — for a spin on June 24.
https://www.notebookcheck.net/Age-of-Empires-II-Definitive-Edition-closed-Steam-beta-kicks-off-on-June-18.423785.0.html