  The first decade of RHIC physics and the first heavy ion running at the LHC
have produced a wealth of data and discoveries. It is timely to now evaluate
what has been learned and ask what compelling new questions have been raised.
In this talk, several key unanswered questions about the properties of the
strongly coupled quark gluon plasma and the distribution of partons inside
nucleons and nuclei will be discussed along with how they can be addressed
experimentally. The PHENIX Collaboration has developed a plan for upgrading the
experiment in order to address these new questions. The current status of these
plans will be presented.
