Battlefield 4: Second Assault, a multiplayer map pack, will be released first on Xbox One. The single-player demo of the “Angry Sea” mission was shown. You can get on a boat and shoot enemies. Battlefield 4 drops across North America on October 29, for PC, PS3 and Xbox 360, and will hit PS4 and Xbox One in due course. It’s out November 1 in Europe. A video shown at the conference is below.