Diadem: Coven Weapons

During the original Diadem, there was a unique Boss encounter in which there would be a chance in which unique weapons would drop related to the current jobs released at the time.

Since the Diadem restructuring, while the gear obtainable through said content was given other means of acquiring, those weapons still remain unobtainable. Are there any plans to release a new means to obtaining these weapons?

By the look of it, they share models with PVP weapons, so that option is there for the look.

The weapons themselves appear to not be obtainable, no.