As far as I know, generation 5 will include the following:
- Three starter Pokemon (Water, Fire, Grass) will be available as the players first Pokemon.
- A rodent normal type and a bird flying/normal that annoy you to no end.
- A handful of version exclusive Pokemon, including the duo that will represent the versions.
- A 10 year old boy or loli will be available at the beginning.
- A professor that doesn't know your gender or name.
- A villainous team with 80's hair.
- 8 gym leaders (I hope for a Dark type gym leader).
- Zubat, Geodude, Magikarp, Goldeen, Abra etc.
this, more than likely there wont be a light type because it would have been introduced along with dark, which was only brought in to balance out the overpowered psychic type along with steel, which is not affected by dark very much so there really isnt a need to create a new type, though it would be interesting to see what they would with a light type