In general, the Japanese Americans who were released from the camps were left to fend for themselves. They had to figure out what to do and how to put their lives back together after they were released.
Some of the Japanese Americans went back to their homes and tried to go back to their former lives. In Farewell to Manzanar, for example, Jeanne Wakatsuki Houston tells about her family's attempt to do this. They were unsuccessul and eventually had to move to a different town as her father tried to find a different job.
Other Japanese Americans settled in places where they had not lived before. My area of Central Washington has a number of Japanese American families who originally came here out of the internment camps.
Some few Japanese went back to Japan.
Overall, then, there was nothing official done with the Japanese American internees. They were simply let out of the camps and left to fend for themselves.