Some new details on Pokémon X and Pokémon Y recently popped up in Shogakukan's CoroCoro magazine, the biggest being the reveal of "Mega" evolutions for certain Pokémon. As Serebii.net reports, the magazine shows some new forms and details how they can be achieved.
Among the Mega Pokémon are MegaBlaziken, MegaAbsol, MegaMawile, MegaMewtwo, MegaLucario, and MegaAmpharos. Each has its own ability, such as MegaMewtwo's Insomnia, MegaLucario's Adaptability, and MegaBlaziken's Speed Boost. Pokémon that can Mega Evolve can only do so while holding a Mega Stone, which is like an Evolutionary Stone with specific items. Mega Evolutions are also temporary forms used only in battle.
UPDATE: a new video introduces Meet Mega Mewtwo, Mega Lucario, and Mega Blaziken!
A sample image captured by Serebii:
See more at the source link.
CoroCoro also revealed some new Pokémon, incuding the Grass-type Meekuru—pre-evolution of Gogoat—the Normal-type Horubii, and the Electric/Fairy-type Dedenne, all pictured from left to right below.
Finally, the first Japanese event for Pokémon X/Y will be a distribution of Torchic from October 12 to January 15.