Earlier SLS first launch was scheduled for 2018. According to the plan, during the launch of the unmanned rocket to bring the spacecraft into orbit Orion. However, NASA plans can change. Now the agency is considering making the very first manned launch. Among other things, this should speed up the return of man to the moon.
According to the original plans of the spaceship Orion will stay in space for about three weeks, coming on the Moon's orbit (about 65 000 km above the surface). In the case of a manned mission, the trajectory of the flight of the ship will be different. Probably, the ship will make a few turns around our satellite and back home.