Please before reading this see the last two leaks for understand what's I'm talking about:
>>31650496

>>31659746

Like I said in the previous leak the Necrozma pieces will be found in all the Alliance region,not Alola.
The Alliance region is composed by 7 islands,every island have a different fauna and flora,it depends on the region what's is more nearby to it,example:island number one,nearby to kanto.
Is this game the map if the Pokémon world will be revealed.
The Alliance region island are not nearby to each other,they are all around the Pokémon world.
Each island will be big like Ula Ula or Poni.
The Pokémon copied for Sun or Moon will not be available until post game.
A boss fight at the end of the main story is planned,it will be more challenging than the other ones.
The game will be more challenging that the others.
And FS is just a placeholder,we will think about a definitive name,no it will be not Stars.