So it seems like Warlock’s buffs are now on a par with the mage!!
A tweet from Matticus (http://www.worldofmatticus.com) alerted me to the fact that Warlocks now have the 10% Stamina buff that was previously from the Imp’s Blood Pact baked in to Dark Intent now. Warlocks of the world rejoice!
I followed this up on MMO-Champ to verify (Not because I doubt Matt’s sources, but for journalistic integrity) and the changes are listed under the latest 5.2 ptr notes. As far as I can see the only other changes for Warlocks in the latest build is a wording change on Fel Armor.