I have a theory, and it might be possible since the last two Worlds opening ceremony each came with a major announcement for the upcoming games, Masuda being invited and announcing Mega Kangaskhan and, respectively, Mega Slowbro. However, this time there will be no upcoming game to make an announcement about, so why not announce a new game (Pokemon Z or whatever)? The ceremony is live on twitch, and we would also be able to hear the crowd's reaction. It would also be the perfect time if they want to release it during the holiday season or early 2016. What do you think?