Misty & Brock Confirmed for Pokemon Sun & Moon Anime

[Zachie]

New info!
Here's the episode titles for the episodes they will be in:

Sept 14: "Kanto in Alola! Brock and Misty!!"
Sept 21: "Gym Battle! Z-Moves vs Mega Evolution!!"

And here's a full look at them + them with Ash:

 

[Shadao]

Is there a reason why they return to Kanto? Who knows Greninja will already with Oaks?

Extracurricular Classes. From Dephender:

Satoshi is returning to his hometown that appeared in the movie?!
Satoshi is reuniting with his friends in his hometown?! Is his journey in Alola already over?!

It can't be?!
Is his journey towards becoming a Pokémon Master over?!
Of course it isn't! He's come to the Kanto region as part of an extracurricular class at the Pokémon School!

His friends and Pokémon from the Kanto region appear!!
He'll meet the friends and Pokémon he competed against in the past, too!
(blurb: They're both Nassy, but they look THIS extremely different)

Takeshi:
Satoshi's friend, whose goal it is to become a Pokémon Doctor.

Kasumi:
A girl whose specialty is Water Pokémon!

Satoshi:
Currently on an adventure with a dream of befriending every single Pokémon!!

The journey is far from over!
And next issue, we'll present new developments!!

This story will air September 14th and 21st!