Recently, a new OnePlus 5G phone passed the 3C certification. The certification information shows that this new phone is submitted for certification by Shenzhen Wanpras Technology (ie, OnePlus technology), Dongguan Oupo Precision Electronics Co., Ltd. The charger has a power rating of 5V6A=30W. If predicted correctly, this should be OnePlus 7 Pro 5G version.
The processor may be the Snapdragon 855 or the newly released Snapdragon 855+ as the heart of OnePlus 7 Pro 5G phone. As for the baseband, the high probability is Qualcomm X50 5G baseband, supporting independent (SA) and non-independent ( the X55 baseband of the NSA). Similar to Samsung Galaxy S10 Plus 5G, the 7 Pro 5G might improve the camera configuration as well along with the hardware performance.
Source (in Chinese)