We had two PageRank updates in June of this year already. However, this latest Toolbar PageRank update seems to be relatively minor and impacts only a small percentage of web sites out there.
Starting on June 20th or June 21st, some people began reporting seeing their PageRank change in the Google Toolbar.
We have threads at DigitalPoint Forums and several at Google Webmaster Help.
This is minor, most people were not impacted. It may be one of those PageRank penalty cycles where sites are hit for buying or selling links. But again, it is a minor update and not noticed by most.
Forum discussion at DigitalPoint Forums and Google Webmaster Help.

Comments:
No Name
07/23/2010 01:36 pm
When will the full pagerank update be?
steve
07/24/2010 06:24 am
for updates see https://twitter.com/google_update
Alex
07/24/2010 07:53 am
Yea I noticed too.Sometimes it is the littlest things that make the biggest difference!
Greensboro
07/24/2010 08:11 am
Is it going to be this month?
marius
07/24/2010 01:01 pm
The informations about google update PR is variated. I need the official information.
Mark
07/24/2010 07:08 pm
We still haven't seen any change in our page rank. Waiting eagerly. I know it doesn't really matter that much either way, but it feels like a pat on the back for our SEO efforts.
maya
07/24/2010 08:26 pm
I dont see update on my sites 7/24/10 any of you, can confirm
cavalorn
07/26/2010 10:55 am
Small update: 2/50 websites with new PR. And I don't care a bit :-)
Anubhav Nair
07/27/2010 05:57 pm
As far as I know, the update will be by end of August. But hoping that it do not affect my page ranks
No Name
07/29/2010 01:32 pm
no google pr updates so far in some of my sites..
Mike
07/30/2010 10:10 pm
Well nothing for me so far. Let see when google updates the PR.
No Name
08/02/2010 02:19 am
No update for Google PR.
No Name
08/02/2010 02:21 am
My Blog still PR2
Michel
08/02/2010 08:55 am
nothing here... maybe end of august
Ravi Chayal
08/15/2010 10:41 am
I Think that Google will update between 15-20 Aug.
Fatih
08/29/2010 11:33 am
I haven't seen any PR changes yet with any of my sites.