Yoshi's Island & Pokémon: Diancie and the Time's Awakening

Yoshi's Island & Pokémon: Diancie and the Time's Awakening (Japanese: ポケットモンスター ☆ ヨッシーアイランド • 歌うディアンシーとの目覚めセレビィ Pocket Monsters ☆ Yoshi's Island: The Singing Diancie and the Awakening of Celebi) is an anime film and the crossover of the Pokémon and the Yoshi series. It debuted in Japanese theaters on March 14, 2014 on the same day that Yoshi's New Island was released in the United States, and then made its first TV premiere on Disney XD in the United States on October 1, 2014.
The first trailer for the film was shown at the beginning of Sonic The Hedgehog 2013, containing Yoshi, Latias and Latios. Its preliminary title was first revealed by CoroCoro on June 11, 2013. The CoroCoro issue released in January 2014 revealed that Celebi and legendary Pokémon Diancie would also have starring roles in the film.
In addition to Celebi and Diancie, the film will feature the Mega Latias and Mega Latios. It will be featured in Japanese theaters with the anime short, Mega Man XY: Prologue to Awakening.