Calling it now
Pokemon A and Pokemon Z

Knowing GF they will throw another curve ball and make two more sequels like they did with Black2/White2.

Also through hacking, we know the existence of two exclusive moves that will most likely be giving to Zygarde, just like Ice Burn and Freeze Shock for Kyurem.
Thousand Arrows and Thousand Waves.

Both moves also have the EXACT same damage and pp as Land's Wrath, another exclusive move to Zygarde.

With that in mind, I'm pretty sure were due for two new Zygarde formes that will utilize these moves like Kyurem Black for Freeze Show and Kyurem White for Ice Burn…which also means TWO NEW GAMES!
It all just MAKES SENSE!