The first and second expansions will be focused on infantry and vehicle combat respectively.
The folks over at EA are keeping 'Battlefield 3' going in a big way thanks to three expansions being launched this year.
The first expansion to 'Battlefield 3,' 'Close Quarters', will focus on short-range infantry fights. In addition to the 10 added weapons, each map will have more destructible terrain. The second, 'Armor King,' is the opposite - big open spaces with plenty of room for vehicular combat.
In addition to these new expansions, EA will give console players the ability to rent and set up custom servers. This will allow people to experience the game in just the way they want.
Source: Venture Beat