After rumors last week, EA and DICE have announced the official release dates of DLC "Second Assault" in Battlefield Xbox 360 4 for : 18 February for Premium members and March 4 for everyone else. The new expansion will contain four famous maps taken from Battlefield 3: Operation, border on the Caspian Sea, Gulf of Oman and the operation Firestorm, redesigned with Frostbite 3 graphics and gameplay of Battlefield 4.