Yes absolutely. But heating the air first (with partial carb heat) can only reduce the amount of water that condenses as (supercooled) droplets.
I think it is simply a matter of degrees of influence that temprature, pressure and humidity have in the process. Partial heat may well increase the carb air temp from what would have been -25 deg unheated to -5deg, but if the OAT is +5deg then the air in the carb will have a higher relative humidity, coupled with the pressure drop in the venturi all the ingredients are perfect for a special serving of Carb Sorbet.