Let’s remove any mystery or confusion.  The PMP® Exam will change on July 31, 2013.  July 30 is the last day you can take a 4^th Edition PMP Exam.  Starting Wednesday July 31, the PMP Exam will be based on the 5^th Edition PMBOK Guide.

No exceptions.  Read this paragraph carefully.  No candidate will be allowed to sit for the 4^th Edition PMP Exam after July 30.  (Keith Rosenbaum of PMI made this point clear in the PMI REP LinkedIn thread that he moderates.)  If you are a Student studying for the PMP Exam, keep this in mind and plan accordingly.  As you know, a Student has 3 opportunities or attempts to pass the PMP Exam in a year.  However, if that Student prepares for the 4^th Edition and fails the exam prior to July 31, the only exam the Student can take after July 30 is the 5^th Edition.  No exceptions.  Please be aware of this risk and schedule accordingly.

PMI posted this schedule for updating its certification exams:   (Note: no change planned for the PMI-ACP at this time.)