I was surprised to see a number of sites providing the download of the "Windows Vista Beta 2 Product Guide", the 300+  page XPS document that describes in detail all the features of the new OS. This document, also known as "The Book of Vista", has been available until now just internally at Microsoft and to customers under the TAP program (a restricted early access program for customers willing to do extensive testing and provide feedback).

I was under the impression that this would not come out until the public beta, but I guess the cat is out of the bag... Do a search for "Windows Vista Product Guide" and you will find this large document all over the net, including the instructions on how to get the required XPS file format viewer. It seems like this has been posted for download then removed from several sites. However, I just found a working link at fellow Technet blogger post at

http://blogs.technet.com/keithcombs/archive/2006/04/12/425079.aspx

Get it quick before this one gets removed as well...