In true Games Workshop tradition, the Faqs have started to appear and leave unanswered many of the questions we have already been asking. It is clear these were as rushed as the 7th Edition (per the Faqs that is official). Some of them are barely there at all while Necrons (for example) is quite lengthy. Look to your Faqs! You won't find much, but they get to claim they posted them quickly.
[url]http://www.blacklibrary.com/faqs-and-errata.html[/url]