Final Fantasy 16's final DLC, The Rising Tide, will launch on PS5 April 18.
The Rising Tide DLC takes place before the ending of the main game when an unmarked letter shows up at the hideaway alerting Clive and co. that the Dominant of Leviathan, the long-lost Eikon of Water, is in need of rescue. Accepting this mission takes you to Mysidia, a new location described as "a hidden land under a blue sky where they will uncover the tragic history of a forgotten people."