communications relay satellite

So in May China put a communications relay satellite, named Queqiao, into a loop 65,000 kilometers beyond the moon at Earth-moon Lagrange Point 2, a gravitationally balanced location from which the spacecraft can exchange signals with both Earth and the moon's far side.

Because the moon will block direct radio contact with the lander and rover, Chang'e-4 will rely on a communications relay satellite, launched in May.

And as if that wasn’t enough, the Trace Gas Orbiter will also act as a communications relay satellite for the growing number of Mars rovers on the surface.

Q: Regarding Chang'e-4, is it correct that there will be a communications relay satellite launched in June 2018, and then the Chang'e-4 spacecraft itself with its rover launched before the end of 2018?