Improved AI interest in Terracotta Army.Improved tactical handling of Great Admirals and Great Generals.Improved AI handling of Promises including that they are more likely to agree if they like you, and also will consider how trustworthy a civ is by whether they've kept previous promises.Improved AI Deal negotiations and analysis.Spaceport district no longer requires population to construct.Most Civilization unique districts now require population to construct (like normal districts).Improved clarity on Warmongering penalties associated with taking a civ's final city.From the Industrial era (about +5 percent) to the Information era (about +20 percent).Increased research costs of Technologies and Civics progressively.Decreased production costs of all Space Race Projects by 40 percent.From the Industrial era (about -10 percent) to the Atomic era (about -40 percent).Decreased production costs of Wonders progressively.Cities can no longer receive amenities from more than one regional building per type they take the highest (ex.Cities can no longer receive yields from more than one regional building per type they take the highest (ex.Huey, Great Lighthouse) so they cannot become stranded in lakes

Great Admirals are no longer allowed to spawn on wonders in water tiles (ex.

Coastal Raids can now pillage districts in addition to the buildings within.Religious units may now Fortify Until Healed.Added new replay option to Wonder completion movies.This only shows up when a single player scenario is available and enabled (as can be found in both of the new DLCs! Jump into Scenarios more easily within the Single Player menu.Put a unit to sleep until they spot an enemy unit.Added Earth map (standard size) Added 'alert' action for units.

Civ 6 patch notes june 2019