Pokémon Ultra Sun and Pokémon Ultra Moon have now been released worldwide! I've been hard at work adding all the information you'll need to the site:
Ultra Sun/Moon Pokedex - includes movesets for all Pokemon
Version-exclusive Pokemon
TM locations
Totem Sticker locations and rewards
TPCi has also released a final teaser video showing a new form of Necrozma, Ultra Necrozma
and announcing move tutors: