The Soyuz-MS is the latest revision of the Soyuz spacecraft. It is an evolution of the Soyuz TMA-M spacecraft, with modernization mostly concentrated on the communications and navigation subsystems.

It is used by the Russian Federal Space Agency for human spaceflight. Soyuz-MS has minimal external changes with respect to the Soyuz TMA-M, mostly limited to antennas and sensors, as well as the thruster placement.

Source: Wikipedia