This was a pvp buff as well as a prep for a pve change. As they said they want to turn Icy Touch into a shield slam of sorts for DK tanks so that we will have a high insta threat on new incoming mobs, etc. But by doing so this also makes it dangerous for DPS DK's to be using it then since they have no bonafied threat dump, i know Dk's have subversion but you know what i mean. So they are making this change so that DPS DK's will still be able to use the frost fever disease without being forced to use the high threat shield-slam-esque icy touch.