A new Inquisition DLC pack is now available for Tropico 5, and Kalypso releasing this with no prior announcement seems part of a deliberate plan to be able to say nobody expects the Tropico inquisition. They say the new pack is available through the Kalypso Launcher and Steam, but it's not on Steam as of this writing, so the whole unexpected deal is literal in that case. What does this involve? Inquiring minds want to know:

On the beautiful island of Tropico, it never rains; El Presidente insists on it. So when the clouds roll in and the rain starts to fall you know something is on the way. Rumours are that a group of citizens have united to form a mysterious cult and have placed a curse over Tropico. A new supernatural authority is looking to seize power and you, as El Presidente, need some divine assistance to lift the curse. Enter, the ‘Inquisition’, the new DLC for Tropico 5 which is out today for PC via Steam and the Kalypso Launcher.

Bring the special services provided by the Inquisition to Tropico and keep them in good favour by building them a new HQ from which to bring down the cultists and their supernatural wrongdoings. But don’t let them have too much power. Make sure you remind them that only you, El Presidente, is the true ruler of Tropico. Only through your careful management can you guarantee that Tropico returns to the island paradise it was before.