Based on past history of page rank updates by Google, here is information on when is Google's next page rank update and page rank update schedule for 2010. This Google pagerank update prediction for 2010 is prepared as per the Google's previous years page rank update schedules.
SEO experts and those who are aware of the importance of SEO are anticipating when is Google's next page rank update.
Last year Google updated the pagerank on December 30th. So by deduction of history, this years first update must be by the end of March. If you watch the Google's previous year's page rank update, you can see Google update the page rank of websites on every 3 months. Updates to page rank seem to be quartly.
Google PageRank update schedule for the year 2010
Q1 - Page Rank Update: 31st March 2010 – 30th April 2010
Q2 - Page Rank Update: 30th June 2010 – 30th July 2010
Q3 - Page Rank Update: 30th September 2010 – 30th October 2010
Q4 - Page Rank Update: 31st December 2010