Between Arenas, V'Ming spends his time as a lock laughing ominously in AV, tanking Olm with his own minions and pondering troll fashion from Zul'Aman. He's recently started to plumb the depths of SSC with his 0/21/40 build and bragging about 8k shadow bolts.
This has been a sad week for warlocks, ironic given that I was just celebrating the summoning changes two weeks ago. Life Tap - a class-defining spell for locks - has been overhauled on the PTR to return 15% mana for 15% health a few days ago. The Warlock community was incredulous at first - "No way, this will be rolled back like the drain mana change" - that quickly turned to dismay when Eyonix clarified how Improved Life Tap will work with respect to this change.