Copter-4.4.3 has been released as the official/stable version for Copters and Traditional Helicopters and can be downloaded and installed using MP or QGC. Alternatively it can be directly download from firmware.ardupilot.org.
The changes vs 4.4.2 are in the ReleaseNotes and copied below.
Changes from 4.4.2
- Autopilot related enhancements and fixes
- BETAFTP-F405 board configuration fixes
- CubeOrangePlus-BG edition ICM45486 IMU setup fixed
- YJUAV_A6SE_H743 support
- Minor enhancements
- GPS_DRV_OPTION allows using ellipsoid height in more GPS drivers
- Lua script support for fully populating ESC telemetry data
- Bug fixes
- AK09916 compass being non-responsive fixed
- IxM42xxx IMUs “stuck” gyros fixed
- MAVLink response fixed when no airspeed sensor during preflight calibration
- Notch filtering protection when using uninitialised RPM source in ESC telemetry
- SIYI gimbal driver parsing bug fixed (was causing lost packets)
- uBlox M10 configuration fix on low flash boards
As always, thanks very much to those who participated in beta testing!