The annual Joyce Ballet Festival showcases the incredibly high level and high-energy of American ballet.  This is a time of reflection, renewal and reconfiguration in ballet, and the two companies described here are conduits of that positive change. Dimensions Dance Theatre of Miami (June 26-27) Ballet may never rate as high as Disneyland, but Miami now has two major dance companies  Dimensions Dance Theatre, founded in 2016 by former Miami City Ballet married principles Carlos Guerra and Jennifer Kronenberg, opened The Festival on June 26.  Founded in 2016, the company's gifted, personable dancers have already mastered an eclectic repertory. Guerra and Kronenberg themselves