Alright mike,
I'm not 'spreading rumours', please remove your glossy Drama Pantaloons and replace them with the firmly elasticated Common Sense Y-Fronts. Comfort and support!
If saying anything on an internet forum can be attributed as 'spreading rumours' then we should all just keep our mouths shut until someone who works for Blizzard makes an official comment, including you, but then those comments frequently contradict in the long run so we'd be in a right pickle. It's a discussion board and I'm stating my opinion, it's not like I'm creeping from nightspot to nightspot claiming the Blizzard devs regularly interfere, on moonless nights, with farm animals. I don't consider my opinion 'baseless' either unless that means I am lacking a signed "Yup, it's true, I have a ***** for my Druid, ~Koraa".
Also, your 'I dont feel underpowered' is wonderful, that makes me truly happy to hear, but you go on to quote a PvE occurence to support it. Warlocks have always been able to solo mobs higher than us, it's part of the fact of a class that can, with effort, create a nice stable cycle of mana, health and damage that never really runs out. In PvP, the focus of the discussion, the story is a tad different in PTR and not so hot on beta according to my guildies. If you'd like to tell me something useful, spend an afternoon duelling/BG and tell me how you fare against the other classes. I would be most interested to know.