What does Game Preview on the Xbox Game Pass Mean??

 Are you on the Xbox game pass and you see games that says Game Preview on them and you are not sure why it says that while the others do not? 

The answer to that question is that it is for the pc games. It is a pc version of the game that is basically in development. It is being worked on and it is in the early access stages.

 I am not sure why it doesn’t do like steam and put early access but when clicking inside of the game, it tell you that the game is still in development and it tells you what to expect with it such as bugs, lags, crashes and all of the good things that comes with early game access.