So this is pretty much going to be a collection of blurbs from the BlizzCon 2010 class Q&A panel. Some questions that were asked throughout the day were things that have come up in the past, but others had new information that hadn't even hit the beta servers yet. The panel members from left to right consisted of Greg "Ghostcrawler" Street (WoW lead systems designer), Kris Zierhut (WoW senior technical game designer), Owen Landgren (WoW game designer), Ion Hazzikostas (WoW game designer) and Chris Kaleiki (WoW associate game designer).
I went back and tried to do a much more thorough job at transcribing the information than we do in our live blogs (because none of us can type as fast as Ghostcrawler speaks). Also, I've added a "too long didn't read" (TLDR) version of each question at the beginning for those of you who don't read the whole post before commenting. For the rest of you, there is a full transcript as well as links I've found to videos of the panel on YouTube and linked directly to where the question is asked, if you want to actually see what was happening. This isn't official video, so it might get pulled for copyright issues, but until then, it's a great reference.