They are supposed to have a PR update this month of August... The 1st week of August was about to end; but no sign of PR update yet. Anyway, there are still 3 weeks to go before the month end. Hopefully, PR update occurs anytime this month.
They updated the pr december last year and then april this year, so definitely they will update it during this present month.
I seen little change in PR with my inner web pages, nor most probability the next PR update would be in October.
Google updates its page rank every 3 months. Then the next page rank update probably be on September or December.
I saw a minor update in February and two minors in June and a minor and a micro in July. Major updates occurred at the beginning of January and April. There's been no evidence presented of a true, web-wide major update in July. Google has been doing a lot of tweaking with the Caffeine project, and a lot of this irregularity in PR updates coincides with the issues in link count and SERPs that arose from Caffeine. I suspect that when you see the Caffeine project stuff settle down, you will then see Google initiate a proper major PR update.
A couple of my sites have updated in the last few days. Right now I'm showing gray bars (pr n/a) for everything so something is happening.
I have some links to a new website and I curios what page rank is going to give it, but apparently no page rank update yet. Still waiting, some of the people expected one page rank update in July.
Sometimes there is a quick fluctuation if they're adjusting something. If those remain as gray bars for too long, then you may have gotten banned..
Hello, Google changes there page rank every 7-10 days. In some cases I have seen them do it every 14 days.
Toolbar PageRank is updated typically 3-4 times per year. Actual PageRank (the one you don't see) is likely being continuously calculated.
Internally, it's done constantly. Externally (as in the toolbar), whenever they feel like. There's no set schedule. There's no point in worrying about PR anyway. It's a minor ranking factor at best.