I cannot disclose my association with Gamefreak due to possible legal actions and real fear. Nintendo & Gamefreak are a little bit harsher this time around, after the Sun & Moon leaks prior to its release. But was lucky enough to play a test version of Ultra Sun, and I was given some details regarding in-game content. Here is what I have seen lucky enough to get my hands on and see:

- Game is an alternate timeline, from the original Sun/Moon timeline.
- The games story centers around the ultra beasts, and there are some new ones. I believe it's like in Sun & Moon post game quest.
- All characters make a return, but some play different roles than what they did before.
- Colress, Anabel and Looker have more involvement this time around.
- All Ash-hats are available in-game via clothing stores, and you can customize certain Pokémon.
- There is an new mechanic that makes certain Pokémon change form when equipped with a certain Z-Crystal.
- "Necrozma Formes" are exclusive to Solgaleo and Lunala.
- PokePelago has new mini games added.
- There are some new Alolan Formes that seem to be exclusively Second Generation Pokemon, heres a few that I've seen: