This is a minor release, with a few small fixes and one important crash bug fix.
The crash bug is in the Septentrio (SBF) GPS driver. Anyone flying with an SBF GPS should update to this release. The driver had a bug that could cause a in-flight crash under some circumstances.
The only change in this release since 3.8.2beta1 is the addition of MANUAL_CONTROL support.
Other changes in this release are:
support takeoff in GUIDED mode for quadplanes
support changing target altitude while hovering in GUIDED mode for quadplanes
improved descent rate control in QRTL and QLAND modes. This fixes an issue with higher than configured descent rates, and smoothes out the change in descent rate for the change to the final landing stage
smooth out the transition to QLOITER or QLAND when transitioning from fixed wing mode. This prevents the sudden nose up when changing to QLOITER or QLAND mode while flying at high speed.
added MANUAL_CONTROL support, allowing for joystick control from QGroundControl