How certain are the skills?

You've told us the barbarian and wizard are more established in terms of skill composition than the WD, having already gone through several more rounds of revisions. Given what we know about the skills for each class now, how certain are you on them? Are some of the classes still subject to heavy change and in a state of flux while others are closer to being finalized? Are you at a point where you can talk specifically about this, or is it something we'll simply have to discover ourselves when beta rolls around in Sept?