From id Software's home page.
http://www.idsoftware.com/June 24, 2009 (Rockville, MD) – ZeniMax Media Inc., parent company of noted game publisher Bethesda Softworks, today announced it has completed the acquisition of legendary game studio, id Software, creators of world-renowned games such as DOOM, QUAKE, Wolfenstein, and its upcoming title, RAGE. The acquisition by ZeniMax Media joins together two of the finest, most respected videogame developers in the world, combining the first person shooter (FPS) expertise of id Software with acclaimed role playing game (RPG) developer Bethesda Game Studios – creators of the 2008 Game of the Year, Fallout 3, and the 2006 Game of the Year, The Elder Scrolls IV: Oblivion. Bethesda Softworks will publish the titles of id Software other than upcoming releases previously committed to other publishers.
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It seems like an end of an era. The last great indie has fallen.
I hope it goes well for them. I remember what happened to Origin after EA aquired them. That was heart breaking.

Thanks to id software and friends for almost 2 decades of kick ass fps!