[Update]: The Emperor expansion has now arrived, though sadly with quite a few bugs.
If there is one thing you can say for certain about Paradox games, it would be that they are incredibly long-lasting. Europa Universalis IV released all the way back in the ancient times of 2013, and despite being nearly seven years old, Paradox is now planning to release a brand new expansion for it.
The titular expansion Emperor deals with the rise and fall of empires and offers a variety of new options for the Papacy, the Holy Roman Empire and numerous revolutionary movements. Here's the brief summary detailing what you can expect to see:
A Powerful Pope
Appoint cardinals, publish Papal Bulls and gather tithes. The Vatican and Papal Controller now have new abilities to sway the souls of the Catholic faithful.
New Holy Roman Empire System
Deal with major imperial incidents that challenge royal power in pursuit of a centralized monarchy or decentralized confederation.
Revolutions Revamped
The spirit of Revolution is a contagion that must be either embraced or vigorously opposed. Use the guillotine and revolutionary guard to enforce the new way of thinking.
New Religious Mechanics
The Hussite faith has power in Bohemia, Defenders of the Faith have power based on the size of their religion, the Counter-Reformation offers new choices in dealing with Protestantism.
Hegemonies
If you accomplish great feats, you should expect great rewards. Seize the mantle of honor for accumulating great wealth and armies.
And more:
Over 20 new unique mission trees for a variety of European nations, provoke rebellions to deal with a problem now, many new events and options.
If all of that sounds like its your cup of tea, then mark June 9th on your calendar as that's when Emperor will be launching at a $20 price tag. As always, I would recommend waiting for a couple of reviews before diving in, just to make sure there is enough meat to the expansion as Europa Universalis IV doesn't have the best track record with them.
To learn more about Emperor, or Europa Universalis IV itself, you should head on over to Steam.