At the PDC, we were shown what Office 12 is going to be like, and it was impressive. But since then more announcements keep coming out about it that in many ways are more impressive than the new user interface. (If you're thinking "what new user interface?" you need to check out the future Office page at MSDN for details.) Apparently the Channel 9 Video has been insanely popular also. In some ways the Open XML formats are more exciting than the UI , especially for developers. And now this: Office 12 - not just Word, but Excel, PowerPoint, Visio, everybody - will all know how to publish their documents as PDF. No third party tool, no add in, it will just work. I read about it on Brian Jones' blog, but there are also details on that future Office page.