In 2021, ESO's 4m Vista Telescope will be converted into a spectroscopic survey facility, called 4MOST. With 2436 fibers, 4MOST will be able to obtain 812 high-resolution spectra (R=20,000) and 1624 low-resolution spectra (R=6,000) simultaneously in a field-of-view with 2.5 degrees diameter. In 2018, the project passed its critical design review; it has now entered the construction phase. The LSW is contributing two major sub-systems to 4MOST: the high-resolution spectrograph and the control software. The 4MOST Consortium is preparing a set of large surveys. One of them will obtain 1.5 million high-resolution spectra of Milky Way halo stars (PI: N. Christlieb, LSW). The ESO community will be invited in 2019 to propose additional projects for 4MOST. I will summarize the status of 4MOST, and provide an overview of the further path towards first light and scientific exploitation of the instrument.