If there is a kit for the Treo 650 then its a good chance, especially since they use the sam connector. Alas a quick check on the Palm Treo store and no hardwired HFK, lots of BT stuff but not hardwired.
Pin configurations are not the same..........totally new set-up and there are some hardware developers still working on it. Trust me it will be out soon.
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Funny it worked.....the last time!!Now I am not sure what was working before they put a hole in my head!!!!
I just ordered my Treo 700w today from our B2B rep (along with my wifes phone) since wer are converting back to Verizon. I don't have my final bill but I did pay for AM NBD for Friday 1/6 delivery
As for the HFK I choose to get the new Motorola HF850 Bluetooth Car Kit that I can have Verizon install it. Getting an accessory from Verizon means lifetime warranty and guaranteed quality install.