- New Battle Tree members obviously
- Solgaleo and Lunala are not in the game. As soon as you evolve Cosmeon, Necrozma appears out of nowhere to absorb them. Same BST as Solgaleo and Lunala but rearranged a bit to match Necrozma. Also have Prism Armor.
- Postgame Ryuki gives u a ticket to the S.S Anne which is now on "world tour" to give people a "taste of Kanto" in the Gym Simulator thingy
- Hau runs away during the Final Act, proceeds to beat the champion before you. Hau isn't nice. At least he is dressed better
- New Pokemon in the Dex and maybe Alola Forms (Unless they scrap those too)
- New UBS replace old ones. Nihilego is replaced. Also Beauty and Absorbtion are replaced by Burst and Assembly. Similar stats too. At least Kartana and Celesteela is here to stay
- New kind of Pokemon like UBs but not. UBs are exclusive to Alola. These will appear more in the future. These are called Zetta Pokemon or something like that. 1000 BST, can only be obtained through "Z-Summons" which is a special Z-Crystal you can equip to any Pokemon. Technically not a playable Pokemon but Necrozmas true form is a Z-Summon