You regular milk technically doesn't have to be refrigerated until open. But shelf life isn't that long. Seriously. Back when containerized milk was first sold it wasn't refrigerated, but people freaked out and wouldn't buy it. So now it's refrigerated.
I remember when the California Milk Board or some other agency tried to advertise in ESPANOL during the 'Got Milk' advert days. They supposedly had the translation screwed up to mean 'Are You Lactating?'