"Glacial Cloth"
Helm - Quest duplicate "Midrealm Hat"
Chest - Crafted with tailoring "Glacial Robe"
Waist - Crafted with tailoring "Glacial Waistband"
Waist - Quest duplicate (Horde only) "Dreadwing Skin Belt" (Appears to have the correct texture applied.)
Feet - Crafted with tailoring "Glacial Slippers"
"Polar Leather"
Shoulder - Quest duplicate "Mantle of the White Tiger"
Chest - Crafted with leatherworking "Polar Vest"
Waist - Crafted with leatherworking "Polar Cord"
Waist - Quest duplicate "Talonite's Belt"
Feet - Crafted with leatherworking "Polar Boots"
"Icy Scale Mail"
Chest - Crafted with leatherworking "Icy Scale Chestguard"
Waist - Crafted with leatherworking "Icy Scale Belt"
Feet - Crafted with leatherworking "Icy Scale Boots" (Seems to have either a broken or wrong texture applied at the moment.)
"Icebane Plate"
Chest - Crafted with blacksmithing "Icebane Chestguard"
Waist - Crafted with blacksmithing "Icebane Girdle"
Waist - Quest duplicate "Muscle Toning Belt" (Which seems to have the correct texture unlike the crafted one?)
Feet - Crafted with blacksmithing "Icebane Treads" (Seems to have either a broken or wrong texture applied at the moment.)
Icebane Plate has a transmog page here: http://www.wowhead.com/transmog-set=1193
NPC characters in game who wear these sets:
Glacial Cloth:
Disciple of Frost in Acherus the Ebon Hold
Icebane Plate:
Nymn in Winterspring, Everlook
Instructor Razuvious in Naxxramas
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If you have anything to contribute to the above list: please comment and I'll add them!I would encourage it if we could urge Blizzard to add these items back to the game for transmogging. They could be included as craftable items in their appropriate professions where the no longer obtainable Frozen Runes are replaced with Frozen Orbs or maybe as replica armor from Darkmoon Faire.