I guess that's it for 3.1...since there haven't been any further great changes to the warlock class past the first PTS-build.
In the past, Blizzard announced a great overhaul and revision for the warlock, especially for the shard-system, our demons ("we want you to bring out succubus and void again") and how the warlock survives or escapes melee...
So...where is it?