As far as I know, there is no change in the SDK regarding this and there won’t be for a long time. Right now, they focus on the project and aircraft editor, but the cfg-files are untouched.
I promised to have a look and I did. It is really weird, as I could find some aircraft, which were using wing_pos_apex_lon to change the position of the main wing, but they didn’t change much. So it is still possible, that this is not working and they tweaked flight behavior a different way. Besides these aircraft, the main wing is always located at 0,0,0 with the quarter chord line.
If there was a simpler way like a variable where I can change the offset of the 3D model, this would be also a way to go.
Can someone else check? Maybe these