Well not much is known now since 2.2 didn't cover much. As we go farther into 2.X storyline every 3 months (3 months per Major Update) we may learn more.

and then sometime after 2.4, 2.5, or 2.6 if we still don't have the answer we may get it in 1st expansion storyline since Yoshi-P did say he wants to release expansion within 2 years after release.