New Pokémon, Alola forms and Z-Moves revealed

New information has been revealed about Pokémon Sun & Moon! Here's the announcement video:

First it shows that several older Pokémon have new Alola forms:

• Exeggutor's new form resembles a palm tree, and is Grass/Dragon type.
• Vulpix and Ninetales become white and are Ice and Ice/Fairy type respectively.
• Sandshrew and Sandslash also become white (with Sandshrew resembling an igloo) and both become Ice/Steel type with the ability Snow Cloak.

New Pokémon are also revealed:

• Oricorio is a bird Pokémon that has a different form on each of Alola's islands. Baile Style is Fire/Flying, Pom-Pom Style is Electric/Flying, Pa'u Style is Psychic/Flying, Sensu Style is Ghost/Flying. It also has a new move Revelation Dance which matches its primary type. Its ability Dancer copies the opponent's Dance moves like Quiver Dance.
• Minior is a ball-shaped Rock/Flying Pokémon. Its ability Shields Down removes its rocky exterior to reveal a core inside, which can be one of 4 different colors.
• Gumshoos is the evolution of Yungoos
• Fomantis and its evolution Lurantis are Grass type and know a new move Solar Blade.
• Mudbray is the pre-evolution of Mudsdale.

Next it's revealed that many Pokémon are rideable in the game - on ground as well as in water and flying.

The Island Challenge is introduced, which appears to be a replacement for Gyms. On each of the four islands trials must be completed, and there is a Trial Captain for each set of trials. Totem Pokémon await at the end of each trial - these are regular Pokémon such as Gumshoos but are larger and powered up with an aura. They bring in other Pokémon to assist them.

Finally, Z-Moves are introduced. These are special, powerful moves - one for each type - that can be used once only per battle. The revealed moves so far are:

• Gigavolt Havoc - Electric
• Bloom Doom - Grass
• Inferno Overdrive - Fire
• Hydro Vortex - Water