As Pokémon Sun and Moon get ever closer we are starting to see more and more new Pokémon being revealed.  We knew that we should expect news tomorrow (August 12th) but it seems its leaked early.

After the English details initially leaked on NeoGAF, the Japanese Pokémon YouTube page has been updated with the new trailer, which you can see below.

The new Pokémon include a fish, allegedly called Wishiwashi in the English version (but we'll wait for confirmation), that has a solo form where it is a bit measly and a more impressive swarm form.  A new mushroom-like and what I can only describe as a fish-bunny-rock has been shown in the trailer, supposedly called Morelull and Pyukumuku in the English version.

Generation 1 Pokémon Meowth, Marowak and Raichu all have new forms in Alola.  Meowth's Alola version looks more nocturnal (and flamboyant) and is now a Dark type Pokémon.  Morawak takes on a Hawaiin flame throwing persona as a Fire/Ghost Pokémon and Raichu has been listening to The Beach Boys as he's an Electric/Psychic Pokémon that surfs on his own tail.

In addition to this the new villainous team is shown off in more detail.  Team Skull's leaders and grunts are shown off and they look as menancingly camp as previous Pokémon villains.

We expect the English trailer to be released soon, but for now enjoy the Japanese one.

Update

The English trailer can now be viewed below and confirms the English names above. It also clarifies that Wishiwashi gets its School form when it reaches a certain level.