Too excited to write witty title

OK, I think it was in a post I never published that I said the last Corocoro promised a huge reveal in today's, and I was skeptical, but this is a huge, potentially game-changing reveal, and it's all to do with that new Mewtwo.
Confirmed in Corocoro for X and Y are "Mega-evolutions" of existing pokemon, namely Absol, Ampharos, Blaziken, Lucario, Mawile and Mewtwo. Their names will be Mega(current name,) e.g. MegaMewtwo. Two of their typings have been announced: MegaMawile will be steel/fairy, and MegaAmpharos will be electric/dragon.  Steel/fairy is also the typing for Mawile, it has been revealed to be the newest retyped pokemon, which could really help it, but MegaAmpharos has not been confirmed as a new dragon, suggesting the Mega-evolutions may not always share the pokemon's typings. Their abilities have been announced: MegaAbsol will have Magic Bounce; MegaAmpharos will have Mold Breaker; MegaBlaziken will have Speed Boost; MegaLucario will have Adaptability; MegaMawile has Huge Power and MegaMewtwo has Insomnia. These abilities mostly work very well, especially Speed Boost, which oddly I was talking about in my last post yesterday, and Adaptability which is RIDICULOUS on a fighting type like Lucario. The one that doesn't really is MegaAmpharos' Mold Breaker, which essentially works only on pokemon an electric/dragon has no problems with. But whatever.
Mega-evolution will apparently be a new form of evolution, which the event they also announced may give us a clue towards.
The first X and Y event, from October 12th to January 15th, will give away a Torchic holding something called Blaziken Knight (probably Blazikenite.) It will make use of a new item called a Mega Stone, and can eventually evolve into MegaBlaziken. This suggests the MegaStone is kinda like the evolution stones we have already.
A new gym leader, whose Japanese name is Koruni, will hold the key to understanding MegaEvolution. She looks a bit like Maylene, and seems to be a fighting type.
Quite how MegaEvolutions work, and what they do, has not been confirmed.
More as it comes (including pictures,) and I'll get to the rest of Corocoro tomorrow. It's not really that interesting.