With over 150 members, the Cluster Working Group (CWG) is the largest grouping within DES. By now there are almost 40 distinct sub-projects actively being pursued within the CWG, with topics ranging from the kinetic Sunyaev-Zeldovich Effect, through to tests of modified gravity, to the evolution of Brightest Cluster Galaxies, and to the properties of active galactic nuclei in dense halos. In this talk I will review some of these projects to give a flavour for what the community can expect from DES-clusters over the next few years (and thereafter from LSST).