vrapi_Initialize can now return a new error code on failure, VRAPI_INITIALIZE_ALREADY_INITIALIZED.
Added a mechanism to adjust the display refresh rate for Oculus Go: vrapi_SetDisplayRefreshRate.
Added Samsung Galaxy S9 Device Types to the API.
VRAPI_FRAME_FLAG_INHIBIT_SRGB_FRAMEBUFFER has been deprecated in favor of using the per-layer flag VRAPI_FRAME_LAYER_FLAG_INHIBIT_SRGB_FRAMEBUFFER.
Input API now exposes and enumerates Gamepads.
vrapi_ReturnToHome has been removed.
vrapi_ShowSystemUIWithExtra is marked deprecated and should no longer be used.
VRAPI_REORIENT_HMD_ON_CONTROLLER_RECENTERproperty has been provided to allow apps the ability to opt into a behavior that combines the controller recenter action with reorienting the headset. To enable this, set the property to 1 using vrapi_SetPropertyInt. This feature is disabled by default.