I'm in some way affiliated with a company that created a new trailer for the pokemon company. I may work there or may be a friend of someone who works there.

As another anon has pointed out (not sure if they have inside knowledge or just got lucky), there will be a trailer dropping within the next two days. The trailer will be about 2 minutes long and will be relatively info packed. As the anon said, it'll be called "XZ/YZ" and will feature some new pokemon, but no mention of a new eeveelution

Now for the trailer's structure.
>like XY's original trailer except instead of just pikachu, two squishys that slowly appear from the top of the Eiffel Tower and close up to the screen
>they close their eyes and hexagons fill the screen
>hexagons fade out to reveal the male MC choosing his starter pokemon
>feMC in front if her bedroom mirror
>A new adventure begins!
>feMC steps outside her house into a new city "Rocherre City"
>male MC runs into grass and encounters a never before seen bug looking pokemon
>With newly discovered Pokémon!
>a lass challenges male MC to a battle with what looks like an evolved form of the bug
>New friends!
>both MCs are seen with 2 distinct character models (male and female)
>male seems is showing his dex then female interpruts and says "Show! Don't tell! Get ready to battle!"
>Her 3D battle model comes up and throws ball with opposite started from FeMC
>A new power rises!
>Team flare members standing around the group
>Flare are wearing a white uniform, basically the same otherwise
>one of the members holding a cage/jar thing containing a squishy
>female friend shouts at flare member "Let that pokemon go free!" which leads into double battle with her and male MC
>New megas have been discovered!

Cont.