MAJOR COMIC SPOILERS - Don't read below if you don't want to know
the IDW panel opened up with Brian Lynch and Chris Ryall announcing the following:
Brian Lynch and Juliet Landau spoke over Facebook about how she was intrigued by what's going on in the story and Spike's story. From that conversation they are now going to be co-writing a 2-shot for IDW about Drusilla.
They also spoke about some sort of Gunn story (apparently Gunn's alive in Kelley Armstrong's Angel: Aftermath....or something).
Finally, the announced that they are doing a Spike Comic written by Lynch and it has an indefinite issue amount as of now. I think Lynch's words were "we'll keep doing it until people get sick of it".
Check back for full video later (along with video of the Dark Horse panel.)