Pokemon information repository Serebii has a follow-up to the information we shared yesterday regarding Pokemon Omega Ruby & Alpha Sapphire. We previously learned that Gallade, Sharpedo, and Camerupt will all have Mega Evolutions, but what about Rayquaza, the flagship Legendary from Pokemon Emerald? The new details state that Rayquaza holds some sort of secret to Mega Evolution, which I suppose is a roundabout way of saying that it has one but the form won't be revealed at this time.
We've also learned that Primal Kyogre has a new move called Origin Wave and that Mega Gallade is still a Psychic / Fighting-type and has the move Inner Focus. As for the demo that will be available through the next issue of CoroCoro magazine in Japan, there will be a Mega Evolution in it that players will see for the first time. That new form as well as any acquired items can be transferred over to the final build of the game. And should you play the game every day, something special might occur.
Again, this demo is only for Japan, although it would behoove Nintendo and The Pokemon Company to bring it out to the West. If they can't make it available through the eShop as a regular demo, they should at least hold GameStop events where 3DS owners can obtain it.
Pokemon Omega Ruby & Alpha Sapphire will be out on 3DS on November 21.