I know the player can’t use Zygarde’s Complete Form at the moment, but will that be changed in a future patch? If so, will the Dream Guru or Ability Capsule be able to change Zygarde’s Ability in a future patch?
I would doubt it, since they no backsprites so they’re most likely not bugs and it most likely isn’t a feature on the devs’ minds. Also in gen 6 (what the game is based on), Aura Break is it’s only ability.
I’m pretty sure the only content that will be added in the next patch is the battle frontier getting it’s frontier brains.