Can you still pre-order batman:arkham city and get the nightwing expansion add on thing if you pre-order it?

apparently u can still preorder even though it was already released, so can you still get the add on for the night wing content? (xbox 360)Can you still pre-order batman:arkham city and get the nightwing expansion add on thing if you pre-order it?
Batman: Arkham Asylum is third-person Action-Adventure game that delivers an authentic Dark Knight experience rooted in an original and engrossing story as well as a combination of melee combat, stealth, investigative and speed-based challenge gameplay. A sequel to 2009's Batman: Arkham Asylum, Arkham City features the full range of classic enemies seen in the previous game, in addition to Catwoman, who is a playable character and has her own storyline in the new release. Additional features include: a range of new gadgets, an increased number of possible melee opponents and a range of movement options for Batman that include leaping, sliding, gliding and the grapple hook.