The latest trailer for Pokemon Omega Ruby and Alpha Sapphire emerged today, and it's got some interesting information about the next Pokemon duo. The trailer is split into three parts: highlights of the Gyms that will challenge us, a new dress-up mode and the next Mega Evolution. We got a bit of this information a few days ago, but now we get a shiny new trailer to go along with the details.

Hoenn's Gyms have all received complete overhauls, falling more in line with the type-specific obstacles and features that X and Y's Gyms showed off. Despite the facelifts, all of the original Hoenn Gym Leaders are back, with Petalburg City's Norman, Rustboro City's Roxanne, Dewford Town's Brawly, Mauville City's Wattson, and Lavaridge Town's Flannery shown. We also get a brief glimpse at the Elite Four, specifically Sidney and Phoebe.

Second is the new Pikachu Cosplay mode, allowing us to dress up the iconic electric mouse in a wide variety of costumes. We see a rock star Pikachu, a professor-looking Pikachu, a sophisticated lady Pikachu and our personal favorite, Luchador Pikachu. We can only imagine what other costumes await.

Finally we get to see the latest Mega Evolution in the spotlight: Mega Metagross. Metagross' four legs become four arms for the floating Mega Metagross. According to the official Pokemon website, Mega Metagross is the preferred Pokemon of the Hoenn Champion Steven, and it gains the Tough Claws ability, which ups the damage on attacks with physical contact, as well as a huge boost in Speed and minor boosts to every other stat.

That's a lot to absorb, but we bet there's even more information coming before Omega Ruby and Alpha Sapphire hits shelves on Nov. 21 on Nintendo 3DS.