An updated Google Directory is being reported at blogs and forums. The update has been observed for the new PageRank bars in addition to an update from DMOZ. The Google Toolbar update was reported a couple of days back, see: Google Toolbar PageRank Update Being Reported.
Recently, Andy Beard had reported the Google Directory had been revamped with some new data.
So it appear that Google may have been working on the directory recently, but the whole picture can only be clarified by Google.
The discussion continues at Digital Point Forums.