According to Nikkan Sports, two Pokemon Best Wishes
movies will be premiered simultaneously on July 16th. The titles are:
Pokemon Best Wishes! the Movie: Victini to Kuroki Eiyuu Zekrom
Pokemon Best Wishes! the Movie: Victini to Shiroki Eiyuu Reshiram
The stories of the two movies will be the same until Satoshi and Pikachu meet Victini but the legendary Pokemon will be either Zekrom or Reshiram.
Source: Nikkan Sports