Focus is new mega Pokemon and returning characters:
you can get mega evolution stones by defeating wild mega pokemon example shown is Mega Absol
Mega Victreebel (turns upside down and skinny with red elements) and Crawdaunt (no typ change, the red part is now black with bigger claws and the star gets purple) reveal
Prof is revealed to be Mable who works for Quasartico Inc. and is assisted by Trevor
Emma confirmed as a detective who needs your help to investigate mega pokemon goin wild
Side quests confirmed to be back