Copter-4.6.3 was released as the stable version for multicopters and traditional helicopters on 04-Nov-2025
Release announcement: https://discuss.ardupilot.org/t/copter-4-6-3-released/140596
4.6.3 was re-released on 20-Nov-2025 after we noticed that the version had been left at Beta instead of Stable. A Note was added to the top of the release announcement linked above