I found this on Digital point from User Sweetfunny and have tested it and this does produce a different result to that of the main Toolbar.

For those who want to see the new values in their Toolbar:

On Windows XP

Navigate to C:/WINDOWS/system32/drivers/etc

Open the file HOSTS with Notepad, then at the very bottom on a new line put:

72.14.255.17 toolbarqueries.google.com

Save and close, you will now be able to browse with the new PR values.

As far as I can tell this is not the final PR output but one of many data centers that are updating. I should give you an indication of where things are heading.