This is just some information that hasn't been revealed yet. It's up to you whether you want to believe it or not.

- The starters' types are Fire/Dark, Water/Fairy, and Grass/Flying. The concept art leak is 100% true.

- Minior will not evolve. When its Shields Down ability breaks, it will boost its Attacks and Speed, also decreasing its Defenses.

- Pikipek will evolve into a fast physical attacker. Examples of moves it will learn through level up are Bullet Seed and Fury Attack. It's evolution will be shown soon.

- Oricorio does not change stats within forms. Think Castform in terms of learnset.

- Wimpod will evolve into a Water/Poison.

- Bounsweet will evolve into a Grass/Fairy.

- There will be a new mushroom Pokemon to be revealed soon.

- A gift Pokemon can be received within some time after the games' release.

- There is a guardian deity per major island.

- There are over a dozen more new Alolan variants of older Pokemon.

- An Ice/Ghost Pokemon will be revealed soon.

- Past characters will return post-game.

- There is an island that is only accessible post-game.

- There are around 90 new Pokemon in this region with the Alolan Pokedex containing around 300 Pokemon.

- A new Water-type and a new Dark-type will be shown soon.

- A feature similar to the DexNav will appear in the games.