Europa Universalis IV: Wealth of Nations will be out on May 29. This is the second expansion for the strategy title, and the main focus is all trade. There's going to be new trade and diplomacy features, and plenty of things for those that like to really research routes.
The new video from Paradox here details the Wealth of Nations expansion more, as project lead Thomas Johansson details stuff like privateering, shipping companies, and covert economic sabotaging.
Wealth of Nations is up for pre-order on Windows, Linux, and Mac for $9.99.