Announced at Gamescom, here is the official info on Mafia 3:
  • Mafia 3 is set in a reimagined New Orleans in 1968, one of the most tumultuous years in American history. This version of New Orleans is bustling with activity, complete with era-inspired cars, fashion and music. During this turbulent time, a cloud of corruption hangs in the air and the city has become a haven for organised crime. The Italian mob controls illegal gambling, drugs, and prostitution, while corrupt police and politicians line their pockets with the proceeds. 
  • Orphaned as a child, Lincoln Clay at last achieves a semblance of family with the city's black mob, finding the surrogate father and brother he has longed for. But when Lincoln's new family is betrayed and slaughtered by the Italian mob, he becomes fixated on revenge and wages a brutal war against the Italians, disrupting the balance of power in the seedy underworld of New Orleans. As the story progresses, Lincoln allies himself with other criminals and builds an empire and a new family of his own that transforms the city.