Nope nothing has been confirmed about them not even their release, as they are still unreleased Pokémon.
Source: I check Pokémon news on a daily basis.
Hoopa however is said to be a Psychic/Dark type and Volcanion is said to be a Fire/Water type, both Pokémon are also said to be Genderless.
Hoopa's Ability is said to be Magician and Volcanion's is said to be Water Absorb. Their Stats are said to be as followed:
Hoopa: 80 | 110 | 60 | 150 | 130 | 70
Volcanion: 80 | 110 | 120 | 130 | 90 |70
Note all of this is still unconfirmed by Pokémon.