It's crucial that you find out what the department want for the upgrade report. At my uni, each department has different requirements for the upgrading process. Unfortantely for me, my department does not have formal guidelines for the upgrade report, and as a result, I've struggled with finding out just what is required. In my case, it's a very detailed report (huge literature review, research questions, discussions on methodology, developed methodology etc etc) and an upgrade presentation) at other unis, it's a meeting.