It seems as though Google is updating the PageRank-display of the Google-Toolbar. On data-center 184.108.40.206 I can see a few definitely new PageRank-values. Those interested in taking a look for themselves can use our PageRank-query. Google seems to shorten the intervals between the updates again, this is already the third update this year. The deadline for this seems to have been April 20th which makes the data quite up-to-date. This was first discovered by Julian from Seokratie.
Update April 30th: The update seems to be distributed to most of the data-centers and can therefore be seen through the Google-Toolbar.