In commemoration of the upcoming simultaneous releases of both 14th Pokémon movies, two new C-Gear skins will be available to download for Japanese players, beginning on July 13th, and ending on October 4th of this year. The skins feature Zekrom and Reshiram, respectively. However, the skin you are able to obtain depends on which Pokémon you first put to sleep and bring to the Eind Oak Dream Island. A Victini Poké Doll is also being made available in commemoration for the aformentioned theatrical releases, however, it will require a password to be obtained.
Source(s): [
Official Japanese Global Link Page]