Twinter (and others),
For the most part the probes and harnesses look the same. P1 is still the power harness, but is now 20Ga pwr/gnd wire with a choke and no serial port for data. P2 and the ECT/CHT probes are the same. P3 (RPM/MP/OP) harness the same, but the pressure transducers are different. P4 (FF/GPS) looks the same. P5 (FP,FQ,Amps) is new.
My recommendation is to bite the bullet, and buy a whole new set. Work closely with your installer to see what he is comfortable leaving the same (EGT and CHT probes and harness, FF transducer, OAT etc.) and at the end you will have a complete system as removed with some new probes / wires, some old for resale.
This is better than waiting for JPI to come up with an upgrade package, because an indicator without probes and harnesses has surprisingly low value because of the cost of building up a system out of spare parts.
Contact me for best pricing on EDM700 to 960 systems, new and used, trades accepted. supercub180@gmail.com
Don