John,
<font color=blue>I understand cruise is part of the eHydro. The options are the automotive type cruise and you have to have this to order the speed match.</font color=blue>
From what I understand, there are five controls that one can get with eHydro. MotionMatch, LoadMatch, and Cruise Control (On/off) come standard as a factory install when you order a tractor with eHydro. What isn't standard are SpeedMatch (Preset maximum speed) and CruiseControl Upgrade (Accel/decel/resume). These latter two have to be ordered as optional add-ons. Talk to your dealer. I'm not sure if these latter two can be factory installed or if they have to be dealer installed. As far as I can tell, the JD configurator is right; they are options. I recall when I was shopping for my 4710, one dealer did tell me that if I wanted these latter two, they could be installed as a field conversion....not a big deal. I wouldn't be too concerned having the dealer do this...I don't think it's a big install, especially if you feel comfortable with the dealer and have confidence he knows what he's doing.
Bob