Judging from the opening, Charizard is soon to be hyped to all hell, it doesnt seem like Ash will use his other pokemon though, Cheren will be introduced but probably with no relationship with bianca, oddly only oshawatt boldore and pikachu were seen on ash's team probably meaning he's getting new members that they didnt want spoiled. Of the legendary dragons Zekrom fits with N better since he wants to create an ideal world where pokemon are happy, but was stopped by facing the heros truth that pokemon are happiest battling with humans. Colress looks evil which isnt really characteristic for him, whereas team rocket seems to side with Looker suggesting that they are in fact good now, since Ash stopped Giovanni.