Song of the South was last released in theaters to Americans on November 21, 1986. Unfortunately, it never got a VHS or DVD release, in the USA other countries outside of North America like Japan - September 25, 1990 (Laserdisc)
August 21, 1992 (VHS), UK - September 16, 1991 (VHS), and Argentinian/Chilean - April 10, 1989 (VHS) October 2, 1992 (VHS) August 18, 1997 (VHS) April 14, 2000 (VHS). The movie was published on November 12, 1946, 40 years before its last theatrical re-release in America. It was also the first live action film created by Walt Disney. The depiction of the main character's former slavery became controversial since the film came out, which is one reason why the Walt Disney Company did not want to release it on home video in America.
There was a short lived campaign to have it shown on Disney+ , but I haven't seen or read anything in over a year. It received the first Honorary Award Oscar in 1948 to celebrate motion pictures achievements that are not covered by existing Academy Awards for its integration of live action and animation.
In 1989 when I visited the UK and returned with a copy of Song of the South on VHS customs had more questions about that video tape then they did about a 18 year old kid with a 20 year old bottle of scotch and brandy as they asked where did you find this (VHS) everything else was just pay the duty tax not even a blink of the eye about a minor having liquor in their possession. I think the only reason Disney released it in 1986 was to keep control of some copywrites but that is my thoughts.