This typically means it is the final build of that particular version (e.g., the last update before 0.5), rather than the final release of the full game.

If you can tell me (e.g., a link to an itch.io page) or what kind of game it is , I can look up the specific features, controls, and patch notes for the 0.4 release.

"TheSwordbearer-0.4-final-pc.zip" appears to be the filename for a specific, likely indie or experimental, indie game project. Based on its name and versioning (0.4-final-pc), this is likely an early-access, prototype, or development release of a PC game focused on fantasy combat or exploration.