Hello there SaigoneseKD. Good day and thank you for the inquiry. The DJI RC Pro ( https://www.dji.com/rc-pro?site=brandsite&from=nav ) is compatible with DJI Mavic 3 and DJI Air 2S. Please refer to our DJI official website at www.dji.com for further updates concerning the compatibility of other models. Thank you.
DJI have not announced whether that will happen, my gut is that it wont support the Go4 app in the future but may support anything that works with the RC1 controller.