Bethesda Softworks today announced their plans to release the editor and downloadable content for Fallout 3. Called the G.E.C.K. (Garden of Eden Creation Kit), the editor will be available for free in December and will allow PC users to create and add their own content to the game. In addition, the first official downloadable content, Operation: Anchorage, will be available exclusively for the Xbox 360 and PC in January, with more downloadable content coming in February and March. Check the press release for more details.