EA has detailed the free unlockable content that will be provided with next week's launch of Battlefield: Bad Company 2 as part of the company's Project Ten Dollar initiative to make pre-owned sales less attractive.
A code in the box will unlock two maps at launch: Laguna Alta, playable in Conquest mode, and Nelson Bay in Rush mode, bringing the total number of maps to 10.
Two further maps will be released later in March at no extra cost if you have the code: Arica Harbor in Conquest and Laguna Presa in Rush.
The press release is open that the maps are "available in the box" and simply unlocked by entering the supplied VIP code, for which you'll need an internet connection (you'll need one to play multiplayer too, obviously). Kotaku has confirmed that the data for the maps is on the game disc, although the PC version will apply them as a game update.
If you do pick up a second-hand copy of the game with the code already claimed, you'll be able to access the maps by buying a new code from EA for $15, so maybe Project Ten Pound would have been a better title.
Battlefield: Bad Company 2 is out a week today, Friday 5th March, on Xbox 360, PlayStation 3 and PC.