Pokémon Omega Ruby and Pokémon Alpha Sapphire announced

Aha this is interesting.
Someone on the pokebeach forums noticed Hoopa in the artwork:

 Spoiler

Hoopa has teleported the legendary pokemon to Hoenn using its Hyperspace Hole (as seen in the picture)

I like how they are tying the event legendaries into the lore with Diancie being the creator of Mega Stones and now Hoopa causing mischief by misplacing pokemon all over the world.