Xbox Series X - Will there be a same thing like the Xbox One S and Xbox One X?

No such thing as an Xbox One Series X. The Xbox One family of consoles has an S and an X but are still just Xbox Ones. You need the Series family of consoles. The Xbox Series S or Xbox Series X. These are different from Xbox One S or Xbox One X.

The "One" and "Series" are the console types.

It actually would. There's an Xbox One, One S, and One X that are all in the same family. Then there is the Series S and Series X that are in a completely different family of consoles.

An Xbox One X is not the same as a Series X. The game will not work on an One X.

I have the Xbox one X project Scorpio, I was told that the game can be downloaded in any serie X or serie S (included mine), thanks for the help!!

Game can only be downloaded on a Series S and Series X, but not an Xbox One X. Xbox One X is not the same as a Series X.

The Xbox Series X avatar editor is the same as the Xbox One, so the Xbox One instructions should work for the Series X|S.

There's no such thing as an Xbox One Series S. There's an Xbox One S and an Xbox Series S. That game is only available for the Series S/X, not the One. So if you have a One S, it will not work.