I am wanting to get certified in windows server. (admin, infrastructure config and active directory) So I am taking the appropriate MS exams in the fall for this. My question is this: I am in an environment with 2008 R2 so I am familiar with it. But I was wondering if it would be better for me to study for and take the win 2012 server exams so I am updated a little more. What should I do? I also have many study tools that are related to 2008. Can I use these to study for the 2012 exams or is there so much that has changed it would be a waste. When do you think that they will retire the 2008 certifications?