I just compared my 3PO to the pic Jeff, and I see nothing new on them off-hand... The paint is a tad different but that's about it, and not unexpected on a proto.
I'd say he's definitely the forgettable figure.
Can't wait for a couple Han's... Gantry, thaw, Skiff fighting, etc.
I want to custom up that block to light up too. Looks difficult, but doable.