Hi Brian,
there is no shortcut to change orientations, but you can change the default width and height to something like 640×960 to start your game in portrait mode instead of the default landscape one, and with the shortcuts switch between the other resolutions of portrait mode.
Changing between portrait and landscape at runtime is not supported, because you usually do not want to design your game for both orientations, because you are limiting your game space (or the logical scene size) in that case. That’s why we do not support orientation changes at runtime, but rather choose one at app start. Do you have any game in mind, which allows changing rotations at runtime?
Cheers, Chris