Soon!
Oh and btw, 1.6.0 is a little further out. It's likely 1.5.5 and 1.5.6 will come first.
Selecting an API like Vulkan/OpenGL/DX12 in an engine is not the same as sitting in the trenches and implementing the code. It's a bit like saying just because you can drive a car, you also know how to build one.
Can you send me your save of Wind Waker?
As far as I know only the US version currently works.
Wind Waker crashes for me on both English and Japanese.
What's strange is that I could get it working on earlier Cemu versions.
I tested 1.3.1 and it worked although slower than a snail.