This is the major release of Cemu 2.1 with a cumulative changelog which includes the changes from all 93 experimental releases since Cemu 2.0.
This release also is the first release of Cemu on Linux that is not marked as experimental.
The release was a few days ago, I didn’t notice until today.
No, the Wii U has a Controller with a built-in touchscreen. It looks like a clunky switch.
Most games can be played with a standard controller.