Imagine taking multiple 2D pictures and rendering them into a 3D model. Or linking pictures together from various sources without any metadata tagging needed! Cannot wait until this is released to the public (if it ever is)
http://labs.live.com/photosynth/default.html
From Angus Logan's blog (yeah, maybe someday I will post something original)
http://blogs.msdn.com/angus_logan/archive/2006/07/30/683123.aspx
Joel Oleson has a blog entry outlining that it will be possible although you will need to apply the B2 Technical Refresh patch before upgrading to the RTM bits.
http://blogs.msdn.com/joelo/archive/2006/07/12/663599.aspx