The latest EFDC_Explorer Modeling System has been released, which includes the Beta Release of EE10 along with EE8.5, EFDC+ and CVLGrid1.1 in one package. EE10 is a major upgrade to the GUI and provides users with a start-of-the-art tool pre- and post-post process this hydrodynamic, sediment transport and WQ modeling tool comes. It comes with many enhancements, including a new multi-class dye options, and temporal and spatially varying fields. A free Demo version is available for download.