I guess I shouldn't pass judgement without actually trying it, but this sounds pretty bad to me. Have you ever had ice cream that's melted and re-frozen? It tastes terrible. One would assume that an ice cream made to home-freeze wouldn't have the same taste problems, but imagine what they'd have to put into the mix to make it work. And how do you get a good distribution of fillings? I don't want to eat my Cherry Garcia and find all the cherries at the bottom (then again, I could flip it and eat them all first).
I'd rather see ice cream get greened up because the energy used to freeze and transport it comes from clean, renewable sources like wind, solar, geothermal, and biomass. If we can green up the underlying infrastructure of our way of life, a lot of things are going to get a lot greener whether they like it or not.
Unilever is trying to cut down on the environmental impact of their products and the low-carbon line is just one of the things they are considering. They are also installing upgraded high efficiency refrigerators and charting the full life cycle of their products in an effort to understand other places to cut waste.
What do you think? Would you try freeze at home ice cream?