They also revealed a new piece of artwork that
shows an aircraft carrier on fire:
Could this mean the return of naval warfare as seen in BF1942? You could control carriers and destroyers, which served as spawn points for soldiers and landing crafts.
Or, maybe they could take this one step further and combine naval warfare with the Titan mode from BF2142? You would have to fight on land in order to capture missile silos, which would bring down the defenses of enemy ships. Then you'd have to infiltrate the enemy ship and blow up it's reactor core.
This is of course wishful thinking. It is possible that we only get to see naval war in the singleplayer campaign, and in multiplayer we have those puny little inflatable boats. Still, if that was the case, why would EA's marketing campaign hint at watery stuff so much? One can only hope...