If it appears that changes are few on the outside of the 2008 Porsche Cayenne, it's even harder to tell the difference from the cabin – at least when the SUV is sitting still. Porsche now offers an optional entertainment system for rear seat passengers, and there's an available load area management feature with integrated floor rails and a partition net. A new Black/Chestnut Brown natural leather option and XM satellite radio are also available for 2008.