What does that really mean right?

It says the game for the Xbox One family INCLUDING Xbox One X is released. What does including mean? Does it ONLY appear for the X or also for the S?

Including means something like so was given something like an example with Xbox one x

Including means that it is also included. Exclusively would mean that it only appears there and not on any other console.

You have free up to and including Friday.

So you have Friday off too, and that's exactly how it is here.

Including also means.