CEMU 1.4.0c is now available and it supports Wii U games in addition to increasing CPU Emulation by 5-6 times adding PowerPC JIT recompiler.
Below are the changelog for the latest version.
- Added PowerPC JIT recompiler (up to 5-6 times faster CPU emulation)
- Decreased shader compilation stutter
- Improved audio emulation
- Large improvements to graphics emulation
- Tons and tons of smaller changes and bugfixes
You can head over here to download the latest version.