Over the weekend, Google updated the toolbar PageRank values. In fact, Matt Cutts of Google basically confirmed the update before it happened, saying:

I figured, since the Jewish new year, Rosh Hashanah is tonight, let’s name it the Rosh Hashanah 5769 PageRank Update. 5769 is the year, like it is 2008 now in the secular calendar. And I’ll upload our Rosh Hashanah theme right now for it:

The disclaimer: Take these toolbar PageRank updates with a grain of salt. The toolbar PageRank values are typically months old and do not always reflect the importance and value of a site on the web or even in the eyes of Google.

That being said, you can see most of the past Google updates and PageRank updates over at our Google PageRank/SERP Updates archives. We have tons and tons of discussion on this update.

Here are the forums discussing the update:
Google PageRank Update, This Weekend!, SphinnGoogle Page Rank has updated, are your satisfied, DigitalPoint ForumsGoogle toolbar PR Update – 27 September, 2008, WebmasterWorldMatt Cutts on Pagerank and Serps, DigitalPoint Forums