Google's new PageRank is 9.
Yes, it is true. After a recent toolbar PageRank update google's PageRank was reduced from 10 to 9 by its own PR algorithm.
This happened after Google became the first website in the history of internet to cross 1 billion unique visitors.
Facebook retained the PageRank 10 award.
For the past few months there are lots of changes happening in Google's search page. The appearance, introduction of +1 button, all these changes are aimed at making search better and improve the quality of search results for the user.
It seems like Google may be busy with changing its PageRank algorithm.