Unity UI - Multiple resolution devices (Retina vs non-retina)

So I am coming to this with only my experience in NGUI, and I have not properly tested Unity UI yet, but I am curious, how does it handle resolution switches within a platform in terms of pixel perfection?
Can you have atlas switching like in NGUI? or does it do it automatically? Or not at all?

 

The only available solution is to use Reference Resolution. There is no pixel perfect solution for different resolutions and no atlas switching.

 

Whats the best way of handling different assets then? Say having an @4x asset for an iPad Retina and an @1x for Nokia Lumia for example?

 

It was suggested to make the UI for the high resolution and to just downscale it. Unfortunately there is no further information yet in the documentation. The "Designing UI for Multiple Resolutions" is empty at the moment with empty sections for "Reference Resolution" and "Physical Resolution".

 

Looks like its being written as we speak. Reference Resolution as some content now.

 

My bad

 

Alright, thanks for the answers guys! Guess I'll just have to try to work with the highest res assets and use the reference resolution script.