As announced in PMI's October 6th communication to the Registered Education Provider (REP) Community, a new version of the PMP® exam will be placed into worldwide use for any and all PMI® credential examinations taken on or after August 31, 2011.

Is this New Exam a Result of Changes to The PMBOK® Guide?
No. Exam takers should continue to reference A Guide to the Project Management Body of Knowledge-Fourth Edition (2008) until a new PMBOK® Guide is released, sometime in 2012.

Will There Be Significant Differences Between the Existing Exam and the New One?
Yes. According to PMI, approximately 30% of the PMP exam content will change as a result of new or substantial changes to reflect the project manager's role as defined by the recent study.

Will There Be Changes to the Eligibility Criteria, Application Process, or Passing Score?
According to PMI, the education and experience requirements that define the eligibility for the existing PMP examination remain appropriate and will not be changed. However, PMI did not address changes to the passing score in its communication with the REP community.

For general questions visit the PMP Update FAQs website at http://www.pmi.org/Certification/Project-Management-Professional-PMP/~/media/PDF/Certifications/PMP%20Update%20and%20RDS%20FAQs%20-final.ashx