Brian has provided a list of answers to the following questions about the new PDF support in Office 12:

  • Do we support tagged PDF (for accessibility)?
  • If we do support tagged PDF, what kind of semantics will Office 12 require the author to use (e.g. headings, styles)?
  • Why is this built directly into Office as opposed to a print driver in Vista?
  • Is this publish only? Or will we support opening PDFs as well?
  • What choices were made with font embedding/subsetting/outlining?
  • Where's the innovation?

http://blogs.msdn.com/brian_jones/archive/2005/10/04/476997.aspx