When your opponent Normal or Flip Summons a monster that has a Level: Target that face-up monster; Special Summon 1 "Clone Token", with the same original Type, Attribute, Level, ATK, and DEF as that target. When that target is destroyed and sent to the Graveyard, destroy this Token.
That doesn't mean anything. They're using cards already made before Duel Links was created that are able to be used in the Duel Links format.
Not only was "Cloning" introduced in 'Duelist Pack: Kaiba' in 2010, but since its release it's had three erratas — and the first three versions of it didn't have the "that has a Level" part of the effect.
So no, there's no guarantee that we'll be getting Xyz