Developer BioWare has announced that all future DLC’s for Dragon Age: Inquisition will only be made available for Xbox One, PS4 and PC.
Here is what the developer had to say:
“All future Dragon Age: Inquisition DLC will be available on PC, PlayStation 4, and Xbox One only, so we designed our Save Importer feature to help make the transition to a new console as easy as possible.”
You can find a migration process and FAQ for each console right here.
Source: Official Website