As we're still waiting for the first in the US
Although US gamers have yet to obtain the first Bravely Default (it's coming in February), a full follow-up game has been announced, titled Bravely Second. This isn't an expansion mind you like For the Sequel -- this is a brand new game.
According to the preliminary information that's been collected, the sequel will take place in the same world as the first, but with a new character named Magnolia. It's also slated for the 3DS, and it currently has no release date or target.