Did the latest firmware supposedly allow for gimbal movement while in fixed wing mode? I have updated all firmware and tried to change the gimbal angle with the wheel and did not get any change. Am I missing something, ie, there was not a change or I am not doing something right to make it work? I did look thru all of the settings menues and did not find anything there.

as far as I know, you've never been able to move the gimbal while in fixed wing mode

Yes, you can move the gimbal in fixed wing mode but you have to unlock it in the screen.Just push the gimbal button underneath the red X button.

Gimbal unlocked