Several players seemed a little confused by how stats worked, so the stat system has been reworked.
Previously, outside of battle you gained stats related to Forms and Auras, and your base battle stats were calculated from those. Now it works the other way around: you gain base stats outside of battle, and your Form and Aura apply percentage modifiers to those stats during battle.
Due to the major changes in this version, any save files from before this update will start a new cycle when loaded.