Pokemon Omega Ruby and Alpha Sapphire-The Battle over Land and Sea!
The newest trailer is shown above, detailing everything we've learned from this month's CoroCoro.
From the magazine Weekly Shonen Sunday in Japan, it has been revealed that in next month's release of CoroCoro (October 15th), a special serial code that will let you access a free trial for Pokemon Omega Ruby and Alpha Sapphire will be given. In the demo, you start off picking a starter Pokemon between Grovyle, Combusken, and Marshtomp and the demo ends with obtaining a Mega Evolution. It's unknown who this Mega Evolution is for, maybe it's a Mega Evolution you can only get from playing the trial, or maybe it's a mega you can get in the demo but cannot transfer it to your full game. UPDATE (9/11/2014): Primal Kyorge's new move is Orgin Wave, Mega Gallade is Physic/Fighing, and has the ability Inter Focus, and Rayquaza is also said to hold a secret Mega Evolution... We also got more information on the demo. It has been confirmed you can transfer items and the mega stone to the main game when it's released, and if you play the demo every day something special might happen...
We can speculate the demo might be coming to North America though, because the Pokemon Company would not let us out on a thing as big as a demo, especially when accomplishing something as a worldwide release.