From what I have seen, "improve the User Interface" is "use a Glade generated flexible layout instead of the old clunky fixed layout", at least so far.
Posted Feb 8, 2013 8:14 UTC (Fri) by Uraeus (subscriber, #33755)
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How it works is that you create your dialogs using the Glade tool, and save it as a .ui file, which is a XML file. Then there is another tool that converts the XML file to use VCL instead of Gtk+.