A new trailer for Pokémon Sun and Moon has been released, which features seven new Pokémon. This trailer has currently only been released in Japanese, so the names of new Pokémon are transliterations of their Japanese names (except Tapu Koko) and the names of the new moves and Abilities are translations of their Japanese names.
Additionally, Zygarde 50% Forme is now confirmed to have the Ability Swarm Change, which is the same Ability Zygarde 10% Forme was shown to have. Swarm Change allows Zygarde 10% Forme or 50% Forme to change into Complete Forme, and appears to activate when it is at low HP. Additionally, Zygarde 50% Forme is now confirmed to be able to learn Thousand Arrows, a move which exists unused in the code of the Generation VI games and that Zygarde 10% Forme has already been shown to use in Pokémon Sun and Moon.