The Euro's BepiColombo will be implemented in collaboration with Japan. A satellite "duo" consisting of an orbiter for planetary investigation and one for magnetospheric studies will reach Mercury after a six-year journey. The satellites will perform the most extensive and detailed study of the planet so far, the ESA said.
http://www.imedinews.ge/en/news_read/23466
The Mercury Planetary Orbiter will be under ESA responsibility, while the Mercury Magnetospheric Orbiter will be under the responsibility of the Japan
A little bit of info on this planet from NASA's voyage during the 1970s
http://www.psrd.hawaii.edu/Jan97/MercuryUnveiled.html
