Today at PDXcon's announcement show, among the game reveals, news of more DLC packs for Crusader Kings II, Europa Universalis IV, and Stellaris were all announced to be coming in 2018.
The first pack to be released will be the Stellaris story pack, Distant Stars. The pack will add new solar systems and "a mysterious sealed off constellation entirely removed from our galaxy." The main focus of this pack will be returning the thrill of exploring the galaxy by adding in more anomalies when traveling through space.
via destructoid https://www.destructoid.com/crusader-kings-ii-europa-universalis-iv-and-stellaris-all-getting-new-dlc-this-year-503748.phtml