The stream has lots of info on the upcoming content. Joel and Semzra anwer questions and reveal quite a bit of interesting stuff. There's no big story related revelations in it, but the more usual implementation stuff regarding what's coming and when. The thing that Joel and Semzra keep repeating, is that feedback on the forums is being read, and more is appreciated.
Hit past the break to read the summary with timestamps. Could contain slight spoilers.