BepiColombo launch rescheduled for October 2018Source.
If I remember correctly, when the mission got final approval in 2009 the launch was supposed to happen in 2014. BepiColombo has had a very troubled development.
CNES and Roscosmos have signed an agreement concerning the PHEBUS ultraviolet spectrometer designed to study Mercury’s exosphere as part of the science payload on the Mercury Planetary Orbiter (MPO) for the European Space Agency’s BepiColombo mission.
The Russian contribution is being led by IKI RAN, the Space Research Institute of the Russian Academy of Sciences, mandated by Roscosmos. In France, the LATMOS atmospheres, environments and space observations laboratory, part of the national scientific research centre CNRS, has been selected for this mission.