Since they're doing these nice Q&A sessions for each class, wouldn't it be logical to assume that 3.2 will be coming out sometime after every class's Q&A has been released?
If so, then hasn't Ghostcrawler averaged about one Q&A a week? With four classes down, only six remain, so I'm guessing late August. :D
The Q&As do not necessarily coincide with the patch cycle. Right now they seem to relate greatly to 3.2 because the views and plans the developers are sharing in the Q&A's ultimately happen to be based on some of the class changes being made in 3.2.