Nuk3town has been OFFICIALLY confirmed by Activision and Treyarch and you will get access to the map on the Black Ops 3 launch.
If you pre-order digitally, the map will be available as a download with no code needed. If you pre-order a physical copy of the game you will get a code inside the game box.
This fan favorite map from Black Ops has returned in a big way for PS4, Xbox One and PC. It has been re-designed from the ground up to highlight Treyarch’s new momentum-based, chained-movement system, allowing players to battle in this adrenaline-charged new NUK3TOWN map. Set in the year 2065, players will experience a fresh take on this classic run-and-gun, close-quarters multiplayer map.