The official Pokémon movie website has updated. Translations follow:

We're Revealing the Mythical Pokémon Zeraora, which Appears in the Movie!!

The mythical Pokémon Zeraora, which appears in
"Pocket Monsters the Movie: Everyone's Story", has been revealed!!

In the latest trailer for "Pocket Monsters the Movie: Everyone's Story", the mythical Pokémon Zeraora showed itself.
It was shown with a grim look on its face, with the young Largo desperately calling out for it as it ran off. Why was Largo crying?!
It seems like Zeraora will be a key factor in the movie's story, so keep paying attention to it!



The mythical Pokémon
Zeraora
Species: Thunderclap Pokémon
Height: 1.5m
Weight: 44.5kg
Type: Electric

Check out the latest trailer!
Check out the character presentation!

What is the mythical Pokémon Zeraora,
which appears in "Pocket Monsters Ultra Sun/Ultra Moon"?

The mythical Pokémon Zeraora appears in the world of the Nintendo 3DS games "Pocket Monsters Ultra Sun/Ultra Moon". It's a Pokémon you can't encounter during normal play.

*It's as quick as lightning!

It emits a massive electric current from the pads on its arms and legs, generating a powerful magnetic field.
It's also capable of using this magnetic field to float, letting it move through the air at high speed.
Its top speed is said to be roughly equivalent to that of a lightning strike.

*Its body takes in electric energy!

Unlike your average Electric type Pokémon, Zeraora doesn't have an internal organ that generates electricity.
It is, however, capable of stockpiling electric energy it takes in externally, then using this as its own electric energy.
When it uses high voltage electric energy, the fur all over its body bristles.

Source: http://www.pokemon-movie.jp/news/?p=3223