CUDA 11 Runfile on Ubuntu 20.04

Accelerated Computing CUDA CUDA Setup and Installation
1

I notice that the runfile install option for CUDA 11.1 isn’t listed under Ubuntu 20.04, only the .deb options.

https://developer.nvidia.com/cuda-downloads?target_os=Linux&target_arch=x86_64&target_distro=Ubuntu&target_version=2004

While the runfile is listed for 18.04 and 16.04 and both reference the same file.

Is this a mistake? What problems am I likely to encounter installing the runfile listed for 18.04 and 16.04 on an Ubuntu 20.04 system?