I believe we will not see 3.2 for older units. That would mean new partioning by some app. To risky for Ford. That would end in a lot of bricked ones.
Hopefully the European jailbreak guys will give us a possibility of upgrading/updating by a userfriendly tool. They are already able to install 3.2 on old units, but you have to send the unit to one of them. But in fact: great guys!