Today I just opened my blog to see the page rank hiked from PR0 to PR2. I am surprised to see the increase in the page rank and very happy have so. Comment if you have any recent PR hike.
Did you crawl out of your cave where have you been? The toolbar PR update happened earlier this month.
I just noticed too today the PR of our official pages on Facebook jump to 4. There might random PR jump on some sites.
Google has updated the PRs on 27th June 2011. And that was on the basis of the Panda Update. Thanks to yourself. You have used unique content.
Indeed the upgrade took place the beginning of August, you simply did't notice until now. Anyway congratulations!
Last update on August 04 2011 when my website got high PR so still then i did not get any update of PR from Google.
I've been around for a while... just don't post as much these days. The OP said "today" is when he noticed the PR update... I know there was one 3-4 weeks ago. :/
Welcome to the strange world of Google, seems like Google liked the work you have been doing and decided to reward your hardwork.