It didn't take long for a Pokémon X and Y Pokédex leak. The new pair of games were only announced in January, but a new leak claims to reveal all the new Pokémon in the two new games. Counting the new Pokémon we already know (legendaries Xerneas and Yveltal; starters Froakie, Chespin, and Fennekin, new Eeveelution Sylveon), the leak - from the notorious 4chan - only includes 99 new Pokémon, but also purports to reveal the name and badges of the new Gym Leaders and the Elite Four. Unfortunately, after several days of intense speculation, the entire list was revealed to be false.
The Pokémon X and Y Pokédex leak claims, among others, new evolutions for Pinsir (Buggler), Heracross (Chryscross), and Sableye (Sabullion), and gives the typing for all the purported 99 new Pokémon, including some exotic dual types such as Water/Ghost, Ghost/Psychic, and even Grass/Fire.
The Pokémon X and Y Pokédex leak also claimed that the games would include many new features, in addition to being in full 3D. According to the unsourced report, trainers would level up, players could play cooperatively, and, most interestingly, trainers could travel up to thirty years into the past. For instance, a player would have to travel back in time to capture or defeat a Munchlax to prevent a Snorlax from blocking a path in the present. Other Nintendo games have explored similar time travel mechanisms before, most notably "The Legend of Zelda: Ocarina of Time" and "The Legend of Zelda: Majora's Mask." The Pokémon series itself has explored time travel in lesser detail as well, especially with #251 Celebi, which even had its own time-travel based movie, so the rumor initially seemed somewhat plausible.
The new Gym Leaders, types, and badges, as well as the Elite Four, were also made public in the reputed Pokémon X and Y Pokédex leak. The only verification provided by the leaker, who called himself "Mr. XY," was a claim that the Pokémon Company would officially announce the new Pinsir and Heracross evolutions at an event on March 15, 2013.
Unfortunately, the Pokémon X and Y Pokédex leak proved to be false when the original leaker, "Mr. XY," recanted. According to Mr. XY, he created the false Pokémon list based primarily on ideas he "legitimately would like to see," and was inspired by the (also likely false) rumor that the new series of the Pokémon anime would be called "Pokémon XtraordinarY." He claims that the ruse "wasn't a mean-spirited fake" and that he "was surprised when it popped up" on legitimate news sites.
The fake Pokémon X and Y Pokédex leak demonstrates the very high level anticipation for the release of "Pokémon X" and "Pokémon Y" this fall, as well as the overall lack of information about the games: almost everything about them remains a mystery. Soon enough, however, the real Pokédex will start to come out in dribs and drabs, as it already has. The anticipation is its own reward.