Either it gets its own type or it gets grouped under one of the existing card types, so I think it will get its own type.
I am curious as to what might happen to types that don't have their own types already.
What happened for each type (except Fairy, of course):
Normal: referred to as Colorless, but it has its own type Fire: has its own type Water: has its own type Grass: has its own type Electric: referred to as Lightning, but it has its own type Ice: grouped under Water Fighting: has its own type Poison: originally grouped under Grass, but was reclassified under Psychic in the Diamond & Pearl set Ground: grouped under Fighting Flying: grouped under Colorless Psychic: has its own type Bug: grouped under Grass Rock: grouped under Fighting Ghost: grouped under Psychic Dragon: originally grouped under Colorless, but got its own type in the Black & White Dragons Exalted set Dark: referred to as Darkness, but it has its own type Steel: referred to as Metal, but it has its own type
In addition to that, Darkness and Metal originally only had special Energy cards for their types, which limited their effectiveness. They got basic Energy cards in the Diamond & Pearl set. As for Dragon, it doesn't have Energy cards. Instead, each Dragon-type card uses 2 of the other energy types, varying by species (except for Kingdra, which apparently only requires Water energy; also, there are currently no Dragon-type cards for Arceus, Reshiram, or Zekrom). Will things continue like this, or will Dragon-types get their own Energy card in the future?