New firmware has been released for the Phantom 4 Pro V2. Here are the notable changes:
Added support for Ground Station Pro.
Updated the video transmission system to OcuSync 2.0.
Added support to connect two DJI Goggles through Multiuser Mode.
The full list of changes are available in the Phantom 4 Pro V2 release notes on the Phantom 4 Pro V2 downloads page.