A new trailer for Pokémon Omega Ruby/Alpha Sapphire showcasing Mega Metagross, Gym Leaders, Elite Four and Pikachu's cosplay was released by Nintendo today, alongside a massive update for the official Pokémon site.

Mega Metagross's Mega Form packs quite the wallop and has a cool design to boot. Then there's the redesigns for all the Gym Leaders, which range from minor adjustments like Watson, Flannery and Norman to near overhauls like Brawly and Roxanne.

Watch the new trailer below.

//www.youtube.com/embed/P-wTDPviFq8