Ghostcrawler has left the door open to these class and item balance issues being fixed (if Blizzard decides to pursue such fixes) in either a hotfix or through an upcoming patch. Chief among these changes are an increase in warlock DPS, a decrease in rogue DPS, a change in protection warriors to limit their utility in PvP, and refinements to Icecrown Citadel weapon procs.
When looking over this laundry list of areas to change, it's important to remember that Ghostcrawler is not promising a fix, and that he and his team are not ready to share specifics. He has not promised you the pony, so don't be mad if some of these changes don't happen.
Ghostcrawler's full statement after the break.