Computer and Video Games conducted a Q&A with World of Warcraft Producer Shane Dabiri concerning patch 1.7 and upcoming content.  It seems Hero Classes are near, finally:

“What’s happening with Hero Classes? What can you tell us about these, what can we expect to see here?

Shane Dabiri: We can tell you that Hero classes are at the top of our priority list and we’ve already begun work on them. However, there really isn’t anything concrete we can say at this time except that they are a priority for us and we’ll reveal more when the time is right.”

Thanks Bluesnews