719 - Diancie
720 - Volcanion
721 - Hoopa

Rumoured types are:

Volcanion = Water/Fire
Diancie = Fairy/ Rock
Hoopa = Ghost/Psychic

Based on the other generations, at a guess, i'd say Hoopa is the sprite legendary (only cause of the pychic typing)


All look ok I guess. Bit "cute", but I suppose the same can be said of a lot of legendaries since Mew

Surprisingly they all have some reference or relating area in game.

Diancie- Anistar Hourglass
Volcanion- A Geo-thermal Pokemon and areas of the seemingly Geo-thermal power plant that can't be entered.
Hoopa- Looks very similar to the souvenir given to you by the hotel guest.