Of course, there’s a main scenario preview available right now, but be fairly warned that it’s a pretty notable spoiler for anyone who hasn’t already done the first half of the 3.5 story. Suffice it to say that the solution to the major problem at the end of that first half was not nearly as final as may have been surmised, and more is coming right along the path. Feel free to speculate about what happens next; you’ve only got a few days left until you find out one way or the other.
Source: Maintenance Notice, MSQ Preview