Activision confirmed that the Black Ops's Classic Fan-favorite Map Nuketown will return in Call of Duty : Black Ops II here is the quote from Call of Duty Site :
Pre-order now and get the Nuketown 2025 downloadable bonus map.
Small and simple, yet lending itself to a variety of playstyles, the original Nuketown became an instant fan-favorite in Call of Duty: Black Ops.
An arena-style map with unique art design, Nuketown promoted the type of fast-paced action that Call of Duty fans from around the world have come to love. Now re-imagined in a 60's depiction of the "Model Home of the Future", Nuketown 2025 is set to take that familiar close-quarters chaos into the future!