If you haven't been paying much attention to the recent Pokémon Omega Ruby and Alpha Sapphire details to come out of Japanese magazine CoroCoro and promptly appear online in blurry scans, not to worry -- it's pretty much all here in this new official video. It covers Mega Metagross, Cosplay Pikachu, the gym leaders, and Secret Bases.
In these remakes, you'll be able to dress up Pikachu with costumes that "seem to have a connection to a kind of Contest Hall." Pokémon-Amie returns, allowing interactions like petting and feeding, so you'll get to see Rock Star, Belle, Pop Star, Ph.D., and Libre Pikachu up close.
As for Metagross, it'll receive the Tough Claws ability upon mega evolving as well as greatly increased Speed, and increased Attack, Defense, Sp. Atk, and Sp. Def. Looks cool!