After almost three years of orbiting Mercury, NASA’s MESSENGER spacecraft provided many new and surprising results. This session will again highlight the latest results on Mercury from MESSENGER observations. The session will also look ahead to observations still to come and to the science and instrumentation of the ESA/JAXA BepiColombo to be launched in June 2016. Papers addressing the planet’s geology, surface composition, topography, gravity and magnetic fields, exosphere, magnetosphere, and solar-wind interaction, ground-based observations, laboratory measurements, or theoretical developments relevant to planetary processes are welcomed