It's a "re-imagining of the classic Battlefield 2142 Titan mode," says DICE
he new Battlefield 4 expansion Naval Strike includes a new mode called Carrier Assault, which DICE describes as a "re-imagining of the classic Battlefield 2142 Titan Mode." You remember Battlefield 2142, right?
In its Titan mode, BF 2142 players had co-operate to destroy the other team's Titan - a flying warship - whilst protecting their own from enemy fire. Players had to fight for control of the anti-Titan missile silos on the ground during the first part of the match before attempting to destroy it.
Attachment 13788Battlefield 4's Commander Mode lets one player move the Titan around and defend it with guns. Given the new name for the mode, it seems likely in Battlefield 4 rather than attack the Titan alone you'll perhaps use it to assault a carrier.
Battlefield 4: Naval Strike will also be released in late March for Battlefield 4 Premium members