Matt Cutts mentioned on his blog that BigDaddy is pretty much complete, he figured it would be done by the end of April I think. He then mentioned that he would suggest to the PR team to update the PR again as I think many people were complaining about the last update. For us, the PR update hit a few pages of our site, but seemed to miss the rest of it, even pages we are getting links directly pointed at. Not really sure why, but I for one would definitely like to see more updates to PR.