On June 23, 2009, ZeniMax Media, best known for Bethesda Softworks, acquired id Software and announced that all future id Software games would be published by Bethesda Softworks, Doom being one (in addition to Rage and future Quake titles).
On May 7, 2008, id Software announced that the development of Doom had begun. John Carmack confirmed in August 2007 that the fourth Doom was in the future plans of id Software. Work on a new Doom game began in the years after Doom 3.