As a result of the continuing Government shutdown, the Mars 2020 Pre-Proposal Conference (PPC), originally scheduled for October 8, 2013, has been delayed. The conference will be rescheduled once the Government employees return to work. The new date and time, as well as information on accessing the PPC, will be advertised as soon as possible on NSPIRES at http://solicitation.nasaprs.com/Mars2020. The AO has been updated to indicate that the PPC date is now “TBD”.