On October 26th, news broke saying that people had managed to decrypt the files that make up the gameÂ PokÃ©mon X & Y. Since that date pictures of threeÂ PokÃ©mon that are not yet are released have been circulating internet. It is not confirmed that theseÂ PokÃ©mon are legendary or not, but the best bet would be that they are.Â A source to Kotaku showed the news source a screenshot that had a Pokedex entry for a rock/fairyÂ PokÃ©mon named Diancie; however, they did not allow Kotaku to release the photo.
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We also have Mega Latias and Mega Latious (Ruby and Sapphire remake?).
DuringÂ PokÃ©mon Diamond and Pearl, I cheated my way through the game with an Action Replay DS. I had a wildÂ PokÃ©mon modifier code, in which you would recieve 493 Pokeballs in your bag. You would toss the Pokeballs corresponding to theÂ PokÃ©mon number in the Pokedex and when you encounter a wildÂ PokÃ©mon, you would encounter theÂ PokÃ©mon you chose. I remember catching Arceus and Shaymin before they were announced or available. Due to this fact, I am confident that these (new) PokÃ©mon, except for Vivillon, are legendary.