Indigo Newsgroup
After Indigo was released at the PDC, a dedicated Indigo newsgroup was created.
You can ask questions about Indigo, and a bunch of folks from our team monitor this newsgroup regularly. So hopefully, if you are playing with the PDC bits of Indigo, you can get your answers in time. It's not terribly active, which makes me think not many people are aware of it.
microsoft.public.windows.developer.winfx.indigo