I posted a comment on the new blog from Bill McDaniel. He has left Adobe so has a new blog at
http://worldbehindtheglass.blogspot.com

I suggested my first thought, that Adobe has finished the phase of Postscript and PDF as a way to represent flat documents on the web. He replies that he hopes "Adobe will expand the concept of PDF into something that encompasses the animated web as you call it. They have an excellent opportunity to find the correct blend of classic PDF-style documents and the new world of Flash style documenting that is emerging."

Let us call that PDF 2.0 or something like that. PDF as a container has some way to go. I still think there is a mass of stuff in the previous Adobe project that is now stable and will probably be included in offers from other companies, both for office documents and for prepress.