Soyuz MS-08 with its three-person crew—Russian cosmonaut Oleg Artemyev and NASA astronauts Drew Feustel and Ricky Arnold—is expected to return to Earth in early October 2018. They will land on the Kazakh Steppe, only several hundred kilometers from where they launched back in March 2018.
Upon undocking from the Poisk module, currently expected at about 7:57 UTC Oct. 4, Expedition 56 will officially end and Expedition 57 will begin. Remaining aboard the International Space Station will be Russian cosmonaut Sergey Prokopyev, NASA astronaut Serena Aunon-Chancellor and European Space Agency astronaut Alexander Gerst.
When Soyuz MS-08 undocks, it will back away from the space station over the course of several hours before performing a deorbit burn around 10:51 UTC with a landing some 55 minutes later.