The Pokemon Company has announced that the newest Pokemon – the mythical Marshadow – will be available in Pokemon Sun/Moon soon. The existence of the Pokemon is something that the community has been abuzz with for a while now- this is the first official confirmation, and indeed, acknowledgement, that Game Freak has made.
Marshadow is expected to be a Ghost/Fighting type Pokemon- a killer combo that leaves it with very few viable weaknesses. Apparently it cannot be encountered in normal play, which seems to imply that it will be a Mystery Gift transfer- no battling and catching this one, it sounds like. But that may turn out to be incorrect- for now, we have no confirmation regarding the details on how to acquire this Pokemon, after all.
Pokemon Sun/Moon is available now on Nintendo 3DS. The game launched last November to record breaking sales, buoying the 3DS to its best year ever worldwide, and is considered to be the best entry in the series.