A lot of people absolutely love this map, and a large part of the Black Ops 2 community have been unable to play it because it was a preorder-only bonus. Now it's free for alll Xbox 360 users: http://marketplace.xbox.com/en-au/Product/Call-of-Duty-Black…
Also, the nuketown zombies map is available for 400 MS Points, and it looks pretty awesome: http://marketplace.xbox.com/en-au/Product/Call-of-Duty-Black…
Unusual for Activision to give away anything at all. Are multiplayer numbers dropping or something?