Dice is really stepping up their game, pickup up the proverbial pieces from Infinity Ward's mistakes. Seems like they are really going above and beyond the call of duty (no pun intended) for their next big release.
To go along with another stellar video showcasing their game and some of the perks you get with the Limited Edition version of the game, the version you get when you pre order, they gave an in depth look at the impacts of these perks regarding to game play in their blog
Quote:
Each of the Bonuses we've carefully selected represents one of the cornerstones of the Battlefield experience: Teamplay, Vehicles, and Veterans. We handpicked Specializations that enhance the abilities of Veterans and Newcomers alike. Let's explore the gameplay possibilities in the Limited Edition of Battlefield Bad Company 2.