88 Series and 20 Series combines do not come standard from the factory (at least for MY2009) equipped as indicated above. There are separate codes in the price book that must be ordered to make the machine Guidance-Ready (everything needed to run autoguidance except the nav controller/harness, receiver and display) or Guidance-Complete (everything needed to run autoguidance).
88 Series combines are display-ready, and can be ordered with or without the AFS Pro 600 display.
It comes down to what I consider ready and what the pricebook says. All the wiring in the cab required for auto guidance is standard equipment, whereas, on the previous 2588's, all of the wiring had to be added. There is a lot less work to do on the new 88 series combines if you do not order any Auto Guidance options. Same is true for precision farming, on the old machine, it the combine did not come with precision farming from the factory, all kinds of wiring had to be installed in the field including the cab.