That being said, the Creation Kit won't be out until after the game's release, because Bethesda wants to focus on polishing the game up and making sure they deliver the best possible experience.
Even now before the game has come out, modders are already hard at work on developing content for the game. Since Fallout 4 was announced, Bethesda has pledged to support the game's modding community with the Creation Kit modding tools, and has said that mods released for the PC will be compatible with the Xbox One platform, and potentially even the PlayStation 4. Thanks to how well-developed and well-supported the modding tools are for Bethesda's games, modders are able to add everything from new enemies and weapons to completely change how the games look and feel. Even years after the release of Skyrim and Fallout 3, modders continue to add, modify, and improve these games with quality content. One of the best things about Bethesda's open-world RPGs is the ability to mod them to your heart's content.
