Expedition 31 begins with the Soyuz TMA-22 undocking in April 2012. Three new crew members will arrive shortly thereafter on Soyuz TMA-04M.

Soyuz TMA-03M

Crew: Oleg Kononenko, Andre Kuipers, Don Pettit

Launch: Dec. 21, 2011, 8:16 a.m. EST
Docking: Dec. 23, 2011, 10:22 a.m. EST
Landing: July 1, 2012, 4:14 a.m. EDT

Soyuz TMA-04M
Crew: Joe Acaba, Gennady Padalka, Sergei Revin

Launch: May 14, 2012, 11:01 p.m. EDT
Docking: May 17, 2012, 12:36 a.m. EDT
Landing: Sept. 16, 2012, 10:53 p.m. EDT (Sept. 17, 8:52 a.m. Kazakhstan time)