I keep trying Blender 2.8 every few days, but for me the wireframe selection is still not useful. Essentially it still seems to behave like transparent solid mode instead of true wireframe mode as it is in 2.79.
I’ve created another topic, but perhaps it is better to mention the issues I see with the current wireframes implementation here.
In wireframe mode, if I try to select an edge that seems to be “behind” another object, it will first select the “front” object and then maybe with a little luck, it would select the correct object.
Here is an example with the 2.8 12 Feb nightly.
And for comparison purposes, here is the seamless wireframe selection in 2.79