Assassin's Creed 4 to take place in Brazil?

Assassin's Creed 3 was released not too long ago, but it seems that interest in the successor to the franchise has already begun to show. One of the great things about playing Assassin's Creed are the places in which the game takes place in, and in Assassin's Creed 3, the game takes place during Colonial American times, but what about the fourth installment. Where would Assassin's Creed 4 take place.

Ubergizmo , Assassin's Creed 4 to take place in Brazil?, Assassin's Creed 4 to take place in Brazil?