>>27411265It likely is. That airs at the end of August. That puts us out about 8-12 episodes (depending on Jap holidays and how much of a break before SM) from the release of Sun & Moon, and they time the anime to air the same time the games are released.
We're not getting a Team Flare/Zygarde AND an Elite Four/Champion challenge subplot in that much time. Likely, whatever the Zygarde thing is, is a lead in to Sun and Moon, before the usual "Ash dumps his girl, goes home, eats dinner, then bounces out to the next area" finale.