There are now two buttons at the bottom left hand side of the map. The left button toggles locking the aircraft in the centre of the screen on and off. (When ‘on’ the button is red, and the map cannot be panned)
The right hand button toggles between free rotation (dark green), north up (orange) and track up (magenta).
When in ‘track up’ and ‘centre on location’ mode, the aircraft will be locked at the bottom 1/3 of the screen