The latest edition, which takes place in the concrete jungles of Liberty City, could fetch $400 million in the first week - at least according to pre-release predictions.  That includes a first-week estimate from publisher Take-Two Interactive, owner of Rockstar Games. 

The dollar figure translates into roughly 6 million copies, a potential first-week sales record for any game.  And GTA4 is threatening to generate the strongest first-week revenues for any entertainment release, ever. 

That means serious exposure for the artists slotted into the game, as well as retail partner Amazon MP3.  The soundtrack for the game remains under wraps, though players will have the ability to grab Amazon MP3s from a 150-song playlist.  Grand Theft Auto IV hits retailers April 29th.