When the final episode of a TV Series airs, or when a TV series is cancelled, its status changes from Continuing to Ended (on TVDB and on Simkl). Inversely, when a TV Series that was considered to have ended, is rebooted or resurrected, the status changes from Ended back to Continuing. In both cases, it would be very helpful to receive a notification of such a major event in the lifecycle of a show.

Since Simkl has already implemented notifications, adding a notification when the status of a TV Series changes (from Continuing to Ended or vice versa) should be a relatively easy task.