VMware have now released Workstation Pro 16.0.0, and details are here: https://docs.vmware.com/en/VMware-Workstation-Pro/16/rn/VMware-Workstation-16-Pro-Release-Notes.html
This version now works correctly – and compiles, with multiple warnings – on Kernel 5.8 (tested with 5.8.9) and also on Kernel 5.9-rc5.
To fix the messy compile – and thanks again to Michal Kubeček – there is a patchset for vmmon/vmware available, here: https://github.com/mkubecek/vmware-host-modules/tree/workstation-16.0.0
Robert Gadsdon. September 16th 2020.