the latest update adds the ability to temporarily modify what the trigger does;
to do this,
look at your hand and then hold the touchpad/thumbstick in different directions to see the available actions;
when you decide on what action to take press the trigger while holding the touchpad/thumbstick in the direction of that action
some actions can be used both on a single screen (by pointing at one screen when pressing the trigger) or on all screens (when not pointing at any screen)
image effects have also been added in settings for boosting overall image quality; more options for tuning the internal settings will be added in future