Oshur it is.
Today marks the launch of Planetside 2‘s latest content drop; Oshur. Today’s update reveals the lost isles of Oshur, the first water-based coninent to be added to the game. The big addition to the game of course is water-based warfare, with each vehicle, player, and projectile getting worked over to function underwater. Yes your tank will now work where the fish poop.
New campaign missions will acclimate players to the continent of Oshur, bringing them to hidden areas around the map and introducing the new mechanics.
Source: Press release