The latest issue of CoroCoro has been leaked and it indeed gives us the first look at the 5th Generation Pokemon that will be featured in the 13th Pokemon movie, and presumably in the next set of games for the DS.  Here’s more detailed information/translation given by PokeBeach:

The March issue of CoroCoro magazine has been leaked on to the Internet, revealing the identity of the Pokemon silhouette from Pokemon Sunday along with its pre-evolution. The silhouette is a Pokemon named “Zoroark.” It is the “Z” from the 13th movie’s title, The Ruler of Illusion: Z, which has now been updated to include the Pokemon’s name – The Ruler of Illusion: Zoroark. The Pokemon is a Dark-type and is classified as the “Monster Fox Pokemon,” with a height of 5.2 feet and a weight of 179 pounds. Apparently Zoroark can stand on all fours as well as just its hind legs. As posted before, Zoroark holds the key to the movie. Its pre-evolution, “Zorua,” is a Dark-type as well and is called the “Evil Fox Pokemon.” It is 2.3 feet tall and weighs 28 pounds.

Update (11:30 AM) – Yaminokame has translated CoroCoro‘s commentary, and we’ve included what we think is important in this paragraph (since most of it is just unimportant hyping). They state, “It seems like something is after Celebi! Celebi is a hair away from danger!! Who is Celebi being chased by in the forest!?” Considering they say “hair,” they’re obviously telling us Zoroark is after Celebi. The first teaser trailer showed us something was chasing Celebi, and Zoroark’s claw slashing even formed the animation for the “Z” in the movie’s title. The magazine also states Zoroark and Zorua are in a huge rage, though for what reason we do not know why. As for Zoroark’s Pokemon ability, CoroCoro goes out of its way to mention it but purposefully hide it, suggesting it will be important to the movie. They ask us, “What could the relation between Zoroark and the Ruler of Illusions be…!? Is there a secret in its ability!?” As of right now, the magazine is not officially linking Zoroark to whoever the “Ruler of Illusions” is, but since they mention it has a special ability, we can probably assume the ability is related to illusions and that Zoroark is in fact the “Ruler of Illusions,” as the title of the movie suggests. After all, the magazine says Zoroark holds the key to the movie.

Stay tuned to purenintendo.com for more as this story develops!