Looks like Google has rolled out another PageRank update. Overall, most sites won’t experience any change in PageRank. However, there is still a significant number of sites whose PageRanks have fallen by one or two points, usually for sites that have been around for quite some time. New sites are fairing fairly well, most of them achieving an average of between 2 to 3. There were improvements in PageRank for some relatively well-known sites, such as Youtube (why of course, a Google product). However most others simply experienced a dip in PageRank, and well-known ones are not spared either.
Though, if compared to the previous update, the previous one would be much enjoyed by most webmasters (firsly being that there were much more increases in PR than decreases). Seems like Google may have tweaked the alogarithm a little, or it could be that most webmasters are relaxing after preparing all that Search Engine Optimisation last year.
The previous PageRank update was on May, which means this update came a lot more sooner than expected. Judging from past updates in January, February, and May, it does seem that Google is updating PageRank much more regularly, with its cycles becoming shorter (hopefully moving towards the 1 month cycle Google had about 6 years ago). The current PageRank cycle is estimated to span across 1.5 to 3 months.