According to Roland Quandt, the next Snapdragon chipset for Windows 10 on ARM machines has been spotted. Apparently, the Snapdragon SC8280 has a larger die size than the Snapdragon 8cx Gen 2 and support for up to 32 GB of RAM. The Snapdragon SC8280 has been tested with Qualcomm's Snapdragon X55 modem too, meaning that it should support 5G connectivity.
https://www.notebookcheck.net/Leaked-Qualcomm-Snapdragon-SC8280-chipset-details-suggest-5G-connectivity-32-GB-of-RAM-support-and-a-larger-die-size-for-Windows-on-ARM-PCs.515538.0.html