  After ten years of running, the PHENIX Collaboration is starting to lay out
the compelling physics that RHIC, as the most versatile hadron collider in the
world, will be well positioned to explore beyond the program planned for
upgrades already in progress. As the fields that RHIC set out to investigate
have advanced and evolved, new questions and directions have arisen at the
frontiers of QCD, and we have exciting opportunities before us to continue to
confront the challenges and surprises of strong interactions into the next
decade. The latest thoughts of the PHENIX Collaboration on this ongoing
planning process for the future of RHIC are discussed.
