As part of a steady stream of information on the upcoming Deathwing patch, 4.3, Blizzard are revealing the looks of upcoming tier sets. The Warlock one keeps to the similar theme of previous one, all dark, tentacle-y and demonic.



For a flashback trip to all the previous 12 tiers, follow the link.

All other Tier 13 armor sets can be found here:
Tier Thirteen Armor Sets
WarriorColossal Deathplate
WarlockFaceless Shroud
DruidDeep Earth Vestments
ShamanSpiritwalker's Vestments
MageTimelord's Regalia
RogueBlackfang Battleweave
PaladinBattleplate of Radiant Glory
PriestVestments of Dying Light
HunterWyrmstalker Battlegear
Death KnightNecrotic Boneplate


Links
Battle.Net Blog - Warlock Tier 13 and Visual Retrospective