Will Square Ever Re-Run A Collaboration?

[Xlantaa]

If I recall correctly, the Final Fantasy XV event re-run is on September this year. Requires level 50. It gives Noctis clothes, hair, some FFXV music and the Regalia.

The Yokai may be another one who can get a re-run to add the missing weapons for reaper and sage (when they come out).

Others like NieR and Monster Hunter are permanent.

About the others, who knows.