Compare Search Engine Optimization tools & methods
There have been many rumors (like always) about a PR update during April 2008, but I haven’t noticed anything new.
However, I did notice that DigPageRank is not working any more and all of Google Datacenters that are tested are responding with either N/A or PR OFF.
Since the only way, except actually seeing it in the google toolbar, to find out about a PR update that is on the way is to check as many datacenters as possible and to see if there are different results.
At the moment I am sorry to say I cannot find any good tool that does that except for Future PageRank, if you know of such a tool that works please share.