Corocoro has revealed more information towards several Japanese forums and its seems that Mega Altaria, Mega Lopunny, and Mega Salamence have been confirmed for new Mega Evolutions for the upcoming OmegaRuby & AlphaSapphire games!
In this reveal, Mega Altaria becomes a Dragon/Fairy Dual-Type with Pixilate and Mega Lopunny becomes a Normal/Fighting Dual-Type with Scrappy. Mega Salamence will retain its Dragon/Flying Dual-Type and will receive the ability Aerilate. It has also been confirmed that players can change your Pikachu's clothes for contests and gains special moves in the process. Pikachu Rock Star gets the move Meteor Mash, Pikachu Ph. D knows Electric Terrain, Pikachu Pop Star knows Draining Kiss, Pikachu Belle knows Icicle Crash and Pikachu Libre knows Flying Press. Players will also be able to receive a shiny Beldum through an in-game event and the Beldum will have the Mega Stone for Metagross. No stat changes have been revealed yet for the three brand new Mega Evolutions, but it is indeed safe to say that Mega Altaria will be a huge havoc on the competitive scene. More information will be posted when more news has been revealed.