Short answer: The sixth edition is still the correct version to use and our PrepCast and Simulator are following the correct and current exam specifications.
Long answer: Please watch this video for all the details:
I am still studying for the exam. There seems to be a huge different between the 6th and the 7th editions on the PMBOK Guide. Did the test change that drastically? Is the PrepCast, that follow the 6th edition, still a valid way to study?
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®