Referring to the comments about a new type: There is nothing that hints at a new type at the moment. Of course I don't know what GameFreak is planning but IMO it's unlikely and unnecessary. Especially a light type as counterpart of dark won't happen: Gamefreak could have done this when introducing Espeon and Umbreon in Gen 2, they could have done it when introducing Darkrai and Cresselia in Gen 4 - The fact is they never did. I consider Psychic as containing the idea of transcendental or sacred energy opposed to dark powers, while Fighting contains the idea of honest and fair battle opposed to shifty and malicious attitude of some Dark type's Pokemon.
evilpacman said:
I personally cant see Dragon, Ghost or Bug type Eevee. All the other types represent some kind of element while these three seem to represent a thing. To me, those types are limiting because they are not elemental. Ghost kinda gets a pass because it could just represent dead things but Bug and Dragon for sure give me a hard time. I cant see an Eevee becoming Bug or Dragon at all.
I agree with this, because Eevee is based on a fox (other sources say pet dog or tanuki, anyhow a mammal). A mammal evolving to a reptile (Dragon), an insect or arthropod (Bug - GameFreaks type for everything small with many legs) is illogical and a deceased Eevee as Ghost might be a little bit creepy.
However, as the Pokédex entries of many games name enviroment as main factor for Eevee's evolution I could see following types:
- Ground (as adaptation to a life in deserts)
- Poison (life in a swamp or necessity of producing venom against enemies)
- Rock (life in mountainous regions or in caves, especially to camouflage)
- Flying (advantage of flying, living in an area where ability to fly is necessary to reach high-lying places)
independent of environment, but still possible:
- Steel (could work similar to Steelix / Scizor by harden the skin)