Pokemon Z
-Sequel to Pokemon X and Y.(Two Versions Z-X and Z-Y)
-Zygarde has to new forms.
-There is now a Neo-Team Flare with Malva as the boss like many others have suggested.
-Few new gym leaders, Wulfric is now a member of the Elite Four, and there is also a new Champion.
-Kalos starters have Mega-Evolutions.
-More Megas
-Easy, Hard, and Veteran Mode(All available from the beginning) Veteran is the same as Hard mode but the levels are a bit higher all trainer Pokemon also have Perfect IVS and items.
-Battle Resort has been expanded with more facilities almost like the Batte Frontier.
-New Playable Protagonist(Customization Returns)
-New Rivals
-Gym Leaders have more of a role in the story.
-Diantha and Cynthia both appear, Diantha is now a full-fledged actor but can be battled at one point.

What else would you like to see in the next Pokemon game /vp/