The Windows SuperSite which is ran by Paul Thurrott has screenshots of Microsoft Office 12 Beta 1. It has many different galleries: Installation, Word, Excel, Powerpoint, FrontPage, and OneNote. Microsoft Office 12 is going to be a very powerful application but will have a learning curve to it. I have already given my review on this Beta version of Office and listed the bugs I found.
Photo Gallery: Windows SuperSite