Samsung may be the biggest smartphone brand in the world but the company's policy on software updates is far from the best. According to a notice sent to users of Galaxy devices, a number of Galaxy A, J, and C smartphones will not receive the Oreo update till December—four months after the release of Android P.
https://www.notebookcheck.net/Samsung-Galaxy-A-J-C-devices-may-not-be-getting-the-Oreo-update-till-December.318696.0.html