An accomplished Role Delineation Study (RDS) has updated description of the project management professional role. The study included the survey of PMP credentials holders to certify updates to domains, tasks, knowledge, and skills. The RDS captures the outlook of project management practitioners from all organizations and it performs all the duties regarding PMP exam and certifies its validity.
I have an article about PMP exam to change in 2015. It contains all the information about the PMP exam changes in 2015. Hope it helps you guys.