Didn't they basically do the same before with Black and White 2?
I never got to play those games so I'm not sure but it sounds like it'd be something similar. I dunno, I still haven't even finished Moon. I was so excited for Pokemon earlier last year and then when the time finally arrived I just sorta went "meh". So many more games came out this year that I'd rather play instead. Maybe soon I'll sit down and push through Moon to see if I enjoy it.
I still haven't finished the after story stuff yet. I enjoyed the game but it takes too long to breed to have a team worth battling with online so meh.