Exchange Server 2013 exams – specifically 70-341 and 70-342 – have now been updated for Service Pack 1. Exchange Server 2013 Service Pack 1 introduced several new features and is compatible with (and indeed required for) Windows Server 2012 R2.
Questions in both exams have been updated to remove any possible ambiguity. When a question is specifically referring to SP1 functionality, it is specified in the question, making it easy for candidates to know when service packs matter in terms of answering the question.