Four fan favourite maps are coming in the new Battlefield 4 DLC pack, Second Assault. Operation Metro, Caspian Border, Gulf of Oman, and Operation Firestorm are all to reappear thanks to the incoming DLC pack, which DICE just confirmed is about to be released on PlayStation 4, Xbox One, PS3, Xbox 360 and PC on February 18. That date applies to Premium members, with the rest of us getting the content on March 4.
The third expansion pack, Naval Strike, was also revealed as coming for Premium members in late March. In that pack we're promised water-based combat, new weapons, gadgets, amphibious vehicles and four new maps (ost Island, Nansha Strike, Wave Breaker, and Operation Mortar).