The original game ending was replaced by a new one through the 1.02 patch. An important plot element was removed, but the other events have also been revised and the developers added a run-down of what happened to all characters in the game.
In Max' office, on his desk to the right of his computer, you can see a copy of Jamiroquai's album Emergency on Planet Earth
The UK version of the game contains a fold-out poster with the image of the German box' front. The back shows a world map with all the locations pin-pointed that are visited throughout the game, along with a few screenshots.