There are multiple changes coming to the CISSP exam. The first is the change from the fixed 250 question computer based test, to computer adaptive testing with somewhere between 100 and 150 questions. I can talk about this at length, but there's a great write up on this topic on this blog answering many of the questions you may have. https://www.cybervista.net/cissp-new-cat-computerized-adaptive-test/ I find that computer adaptive testing is harder because you are forced to answer each question before moving on. If you don't know something you can't put it aside and come back to it later. It means scenario questions which burn time can't be pushed to later in the test either. This also means the original test of 6 hours w/ 250 questions you had 1.44 minutes per question and on the new test you have between 1.2 and 1.8 minutes per question depending on if you have 150 questions or 100 questions at the extreme. This change will happen on 18 December 2017. https://www.isc2.org/certifications/CISSP/CISSP-CAT The next major change is the change in percentages for each of the CBKs in April 2018. The write up on cccure.org is quite good on this: https://cccure.training/m/articles/view/NEW-CISSP-CBK-version-is-coming-out-in-April-of-2018 The chart they provided on their blog outlines these changes: WEIGHING OF EACH DOMAIN The weight given to each of the domains have changed quite a bit on some of them and it seems to come back to what they used to be when we had 10 domains versus 8 domains. DOMAIN % on 2015 CBK® % on April 2018 CBK® Security and Risk Management 16% 15% Asset Security 10% 10% Security Architecture and Engineering 12% 13% Communications and Network Security 12% 14% Identity and Access Management (IAM) 13% 13% Security Assessment and Testing 11% 12% Security Operations 16% 13% Software Development Security 10% 10% I'm hoping these resources help answer many of the questions people have about these changes. The core idea is if you want to take the existing exam, you need to take it BEFORE 18 December 2017. If you want the same percentages, you need to take it before April 2018.