The MSc project is a significant element of your course, so it can be really valuable to do some advanced planning and thinking about the topic you'd like to focus on for your dissertation. This must be relevant to your course of study, but more than that, is also presents a great opportunity to hone your expertise on a topic of your interest and the direction in which you'd like to pursue your career. Think about where you want to be in five years, what sort of jobs would help you to get there and what project would help you in that journey. Any background reading and research that helps you form a clearer understanding of potential project areas would be helpful to you while you are waiting for the start of the course.