Poor support for hi-res (Retina) displays

Are there any plans to support hi-res (Retina) displays in Ubuntu/Unity?

It's possible to scale the font size using Unity Tweak Tool but the graphics (window decoration, checkboxes, etc) is still very small. Margins also being to small and the top panel won't resize (height is actually a hard coded value in the code), so the text is almost clipped.

Will this be solved when/if Ubuntu moves to Qt since Qt 5.1 (http://blog.qt.digia.com/blog/2013/04/25/retina-display-support-for-mac-os-ios-and-x11) will have support for hi-res displays?