Quote Originally Posted by deadlegion View Post
Season pass means you get all future DLC for one price now. If you have the basic game already it's the cheaper option instead of buying DLC individually as they are released.

Some content is free though, I read that survival mode is a free update.
I haven't touched the game since just after I got the last November, there have been several updates since then afaik so maybe the survival update is already there idk.
Just to clarify here, a season pass does not mean ALL future DLC, it usually means all DLC within 1 year of the game's launch.