Rubbish rumours, though. They've been there every gen. I really don't get where the fight/dark/psychic comes from. It's not even a proper triangle. Flying>fighting>rock>flying and poison>grass>ground>poison are, but those never get hyped.
Also, it only confirms the types of the first forms. Only bulbasaur had a secondary type of all stage 1 starters, and in gen1 there were no monograss mons. Well, outside of tangela, anyway.