BepiColombo is a space probe developed by ESA and JAXA, to reach and investigate Mercury. It is set to launch in October 2018 to arrive in December 2025 for 1 year of scientific investigation. It will use solar electric propulsion to produce an ion thrust, and perform a number of flybys past Earth, Venus, and Mercury.
Included are two orbiters to be deployed at the final arrival:
A possible third module, MSE, the Mercury surface element, to land for about a week's operation, was canceled.