There's a scan of Jump magazine floating around, revealing a "new" character for Bravely Second. Magazine says it's Tiz Arrior, though he looks nothing like the meek young boy from Bravely Default. Indeed, he looks much fiercer... almost evil. He seems to be using some magic, as you can see him with some ball of light in his hand.
Also a new job: Guardian, and new "system"... but impossible to read.
The scan says that you have to rescue the imprisoned hero (Tiz). That seems to indicate that the special movie at the end of BD:FtS doesn't take place between the two games, but is a part of the BS story itself.
Also a new job: Guardian, and new "system"... but impossible to read.